There is at least one issue related to HBRs and USP5.1 - all described in
this topic
Unfortunately there is no easy way to download all currently applicable updates with one click

In case of unofficial updates you can use my method of "easy downloading" which is described
here. After doing so you'll have to download around 100 official updates manually. Slipstreaming IE6/OE6 is fairly easy by using HFSLIP
Bristols' list is probably the best source of updates for Win2k. Almost all of the unofficial updates listed in the topic at RyanVM are also listed by bristols.
Here you can see my list of updates that I slipstream. There are a few HBRs among them too but the majority of them consist only of official & unofficial updates.
Quote
Files in your HF folder:
directx_Jun2010-W2KFP_redist.exe
IE6.0sp1-KB905495-Windows2000-x86-ENU.exe
IE6.0sp1-KBz2416400-v2-Windows2000-x86-ENU.exe
IE6.0sp1-KBz2467659-v2-Windows2000-x86-Global.exe
IE6.0sp1-KBz2544521-v2-Windows2000-x86-Global.exe
MDAC_TYP.EXE
MDAC281-KB927779-v2-x86-ENU.exe
MDAC281-KB954920-v2-x86-Global.exe
MDAC281-KB960071-v2-x86-Global.exe
MDAC281-KB961451-v2-x86-Global.exe
MDAC281-KBz2419632-v2-x86-Global.exe
MPSetup.exe
msxml2.msi
msxml2sp6-kb887606-x86-enu.exe
msxml4-KB973685-enu.exe
msxml6-KB973686-enu-x86.exe
OE6.0sp1-KB978542-Windows2000-x86-ENU.exe
OE6.0sp1-KBz2423089-Windows2000-x86-ENU.exe
rootsupd.exe
SERVICNT.EXE
TTFPAK.EXE
Webfldrs-KB892211-v2-ENU.exe
Windows2000-KB838989-x86-ENU.EXE
Windows2000-KB839228-x86-ENU.EXE
Windows2000-KB839264-x86-ENU.EXE
Windows2000-KB891861-v3-x86-ENU.exe
Windows2000-KB893756-x86-ENU.EXE
Windows2000-KB894395-x86-Global.exe
Windows2000-KB896358-x86-ENU.EXE
Windows2000-KB896423-x86-ENU.EXE
Windows2000-KB899587-x86-ENU.EXE
Windows2000-KB899589-x86-ENU.EXE
Windows2000-KB900725-x86-ENU.EXE
Windows2000-KB901017-x86-ENU.EXE
Windows2000-KB901214-x86-ENU.EXE
Windows2000-KB905414-x86-ENU.EXE
Windows2000-KB905749-x86-ENU.EXE
Windows2000-KB908506-x86-ENU.EXE
Windows2000-KB913580-x86-ENU.EXE
Windows2000-KB914388-x86-ENU.EXE
Windows2000-KB917008-x86-ENU.EXE
Windows2000-KB917537-x86-ENU.EXE
Windows2000-KB918118-x86-ENU.EXE
Windows2000-KB920213-x86-ENU.EXE
Windows2000-KB920670-x86-ENU.EXE
Windows2000-KB920683-x86-ENU.EXE
Windows2000-KB923191-x86-ENU.EXE
Windows2000-KB923561-x86-ENU.EXE
Windows2000-KB923810-x86-ENU.EXE
Windows2000-KB923980-x86-ENU.EXE
Windows2000-KB924270-x86-ENU.EXE
Windows2000-KB924432-x86-ENU.EXE
Windows2000-KB924667-x86-ENU.EXE
Windows2000-KB925902-x86-ENU.EXE
Windows2000-KB926121-x86-ENU.EXE
Windows2000-KB926247-x86-ENU.EXE
Windows2000-KB926436-x86-ENU.EXE
Windows2000-KB927489-v2-x86-Global.exe
Windows2000-KB928843-x86-ENU.EXE
Windows2000-KB935839-v5a-x86-ENU.exe
Windows2000-KB938827-x86-ENU.EXE
Windows2000-KB941569-x86-ENU.EXE
Windows2000-KB942831-x86-ENU.EXE
Windows2000-KB943055-x86-ENU.EXE
Windows2000-KB943485-x86-ENU.EXE
Windows2000-KB950749-x86-ENU.EXE
Windows2000-KB950974-x86-ENU.EXE
Windows2000-KB951748-V2-x86-ENU.EXE
Windows2000-KB952004-x86-ENU.EXE
Windows2000-KB952954-x86-ENU.EXE
Windows2000-KB953155-x86-ENU.EXE
Windows2000-KB955069-x86-ENU.EXE
Windows2000-KB955417-x86-ENU.EXE
Windows2000-KB955759-x86-ENU.EXE
Windows2000-KB956802-x86-ENU.EXE
Windows2000-KB956844-x86-ENU.EXE
Windows2000-KB958644-x86-ENU.EXE
Windows2000-KB959426-x86-ENU.EXE
Windows2000-KB960225-x86-ENU.EXE
Windows2000-KB960803-x86-ENU.EXE
Windows2000-KB960859-x86-ENU.EXE
Windows2000-KB961063-x86-ENU.EXE
Windows2000-KB961501-x86-ENU.EXE
Windows2000-KB967715-x86-ENU.EXE
Windows2000-KB968006-x86-Global.EXE
Windows2000-KB969059-x86-ENU.EXE
Windows2000-KB969883-x86-ENU.EXE
Windows2000-KB970238-x86-ENU.EXE
Windows2000-KB970483-x86-ENU.EXE
Windows2000-KB971032-x86-ENU.EXE
Windows2000-KB971468-x86-ENU.EXE
Windows2000-KB972270-x86-ENU.EXE
Windows2000-KB973037-x86-ENU.EXE
Windows2000-KB973507-x86-ENU.EXE
Windows2000-KB973869-x86-ENU.EXE
Windows2000-KB973904-v2-x86-ENU.EXE
Windows2000-KB974318-x86-ENU.EXE
Windows2000-KB974392-x86-ENU.EXE
Windows2000-KB974571-x86-ENU.EXE
Windows2000-KB974783-x86-ENU.EXE
Windows2000-KB975254-x86-ENU.EXE
Windows2000-KB977290-x86-ENU.EXE
Windows2000-KB977914-x86-ENU.EXE
Windows2000-KB978037-x86-ENU.EXE
Windows2000-KB978601-x86-ENU.EXE
Windows2000-KB978706-x86-ENU.EXE
Windows2000-KB979309-x86-ENU.EXE
Windows2000-KB979482-x86-ENU.EXE
Windows2000-KB979559-x86-ENU.EXE
Windows2000-KB979687-v2-x86-ENU.exe
Windows2000-KB980218-x86-ENU.EXE
Windows2000-KB980232-x86-ENU.EXE
Windows2000-KB981322-x86-Global.exe
Windows2000-KB981852-v2a-x86-ENU.exe
Windows2000-KB982132-x86-Global.exe
Windows2000-KB982214-v2-x86-Global.exe
Windows2000-KB982665-v2-x86-Global.exe
Windows2000-KBz2079403-v1a-x86-Global.exe
Windows2000-KBz2121546-x86-ENU.exe
Windows2000-KBz2124261-v1a-x86-ENU.exe
Windows2000-KBz2290570-x86-Global.exe
Windows2000-KBz2347290-x86-Global.exe
Windows2000-KBz2360937-v1a-x86-Global.exe
Windows2000-KBz2387149-v1a-x86-Global.exe
Windows2000-KBz2412687-x86-Global.exe
Windows2000-KBz2440591-x86-Global.exe
Windows2000-KBz2443105-v2-x86-ENU.exe
Windows2000-KBz2476687-v2a-x86-Global.exe
Windows2000-KBz2479628-v8-x86-ENU.exe
Windows2000-KBz2485663-x86-ENU.exe
Windows2000-KBz2506212-x86-Global.exe
Windows2000-KBz2507618-v1a-x86-Global.exe
Windows2000-KBz2511455-x86-Global.exe
Windows2000-KBz2562937-x86-Global.exe
Windows2000-KBz2570791-v2-x86-ENU.exe
Windows2000-KBz2616676-v2-x86-Global.exe
Windows2000-Script58-x86-Global.exe
Windows2000-WindowsMedia9-KB973540-x86-ENU.exe
Windows2000-WindowsMedia-KB952069-x86-ENU.exe
Windows2000-WindowsMedia-KB954155-x86-ENU.exe
Windows2000-WindowsMedia-KB968816-x86-ENU.exe
Windows2000-WindowsMedia-KB975025-v2-x86-ENU.exe
Windows2000-WindowsMedia-KB975558-x86-Global.exe
Windows2000-WindowsMedia-KB978695-x86-ENU.exe
Windows2000-WindowsMedia-KBz2115168-x86-Global.exe
Windows2000-WindowsMedia-KBz2378111-x86-Global.exe
WindowsInstaller-KB893803-v2-x86.exe
WindowsMedia41-KB952068-x86-ENU.exe
WindowsMedia41-KB980858-v2-x86-ENU.exe
WindowsMedia64-KB954600-x86-ENU.exe
WindowsMedia64-KB974112-x86-ENU.exe
WindowsMedia6-KB925398-v2-x86-ENU.exe
WindowsMedia9-KB891122-x86-Global-ENU.exe
WindowsMedia9-KB969878-x86-ENU.exe
WindowsMedia-KB911564-x86-ENU.exe
wmfdist.exe
wmp6cdcs.exe
Files in your HFCABS folder:
_IE6_HFSLIP.CAB
_IE6b_HFSLIP.CAB
_OE6_HFSLIP.CAB
BRANDING.CAB
IEW2K_1.CAB
IEW2K_2.CAB
IEW2K_3.CAB
IEW2K_4.CAB
MAILNEWS.CAB
OEEXCEP.CAB
Swflash.cab
WAB.CAB
Files in your HFGUIRUNONCE folder:
UPHClean-Setup.msi
Files in your HFSVCPACK folder:
2KDNF11SP120SP2.exe
7z920_SWL.exe
aflash1031837FF_silent.exe
Java6u27.exe
shkwslim.exe
tweakui.exe
Files in your HFSVCPACK_SW1 folder:
Windows2000-WindowsMedia-KB977816-x86-ENU.exe
windowsmedia-kb895181-x86-enu.exe
Files in your HFSVCPACK_SW2 folder:
vcredist2005_x86.exe
vcredist2008_x86.exe
vcredist2010sp1_x86.exe
windowsmedia9-kb817885-x86-enu.exe
You mentioned before that you want to slipstream the newest version of system components (IE, MDAC, etc.). In case of Script I'd suggest using the unofficial Script 5.8 as it's much faster than the older ones (althout it may not be useful on a server...

). My list contains WMP9/DX9 and updates for them too which you may not need on a server.
FW/AV - as Kurt_Aust has already said, Comodo v2.4 is the probably the best solution for a 2K system at this moment. The newest version of Avast Home can be installed in 2K Server too if you use the "trick" mentioned in
that topic.
This post has been edited by tomasz86: 26 September 2011 - 08:10 PM