Here http://support.microsoft.com/kb/269239/EN-US/ it say that microsft hasn't released any patch to fix NetBIOS Vulnerability on Win ME, there is a unofficial patch?

You shouldn't have port 137 open to the whole Internet anyway.

I don't have it opened but I'm a bit paranoid.

Paranoid people dont need netbios
You can disable it, see " Increased Netbios Security" overhere:

http://www.mdgx.com/newtip19.htm

If you unbind it as nogurus link shows you will have nothing to fear and still retain your file sharing capabilities on a lan. Netbios cannot travel over a wlan,www etc unless it bound to another protocol

Also, if you're behind a NAT router and not in DMZ, none of this matters.

I use WinXP PC with USB modem and ICS, Win ME pc uses ICS to connect to internet.
I noticed that when I disabled NetBios over TCP/IP in Win XP pc then file and printer sharing stop working.

Here is the actual link:
http://www.mdgx.com/newtip19.htm#INS

HTH

Here's a couple of patches taken from www.grc.com years ago, that are said to close and/or open port 139. Works on Windows 98/Me. Any one want to test them and confirm that they work on their system?

I'd rather just rename the file as MDGx suggests there.

This: http://www.mdgx.com/newtip19.htm#INS kills "file and printer sharing".
If I un-bind tcp/ip from "file and printer sharing", then "file and printer sharing" stop working.

Can some experts here simply path "Vnbt.386" (maybe understanding how the win98 fix works and copy it on win me)?

To my knowledge file + printer sharing is tied into NetBios.
More info:
http://www.pc-help.org/www.nwinternet.com/...ues/sharing.htm
Therefore you cannot use shares [$file +/- $printer] if you disable NetBios.

Also, vnbt.386 is specific to the 9x OS edition.
The 1 from 98/98 SE doesn't work with ME nor the other way around.

So you can disable NetBios 3 ways [but this will also disable file + printer sharing]:
1. Follow this guide:
http://www.mdgx.com/newtip19.htm#INS
2. Follow this guide:
http://www.grc.com/su-rebinding9x.htm
3. Use the Noshare.exe "patching" tool posted above by sam13484.

Please keep in mind that file + printer sharing is a serious security vulnerability if you don't know what you're doing or if you are careless:
http://cable-dsl.home.att.net/netbios.htm

Your choice.

HTH

If tcp/ip is unbound from netbios your home network file sharing will work fine between win9x computers, I transfer over mapped drives most days with it unbound. Your problem lies at your winxp end, which does not support netbeui as standard it needs copying from your xp disc or downloading.
Once you have sorted your xp end out, file sharing will work, it is not a win9x problem.
I would seriously consider ditching ics and getting a router, they offer far greater security.

Talking about ICS, a question...
Windows 98 FE is more secure in terms of sharing and network security than Windows 98 SE/ME?
I know that Windows 98 FE hasn't ICS.

not really true, Max_04. even though Win98fe doesnt have ICS, Win98FE users can install the XP-based ICS client on a Win98fe machine. Copy the NETSETUP.EXE file from an WinXP machine and onto a floppy disk. Then run NETSETUP.EXE on a Win98fe machine and that'll install ICS and some UPNP (universal plug & play) components onto Win98fe. the XP SP1/SP2 editions of NETSETUP.EXE include the Q314941 UPNP security fixes.

also, a normal or typical Win98SE installation does not automatically install ICS. so ICS is not installed under Win98se by default.

eh, I dont have to worry about the unpatched Netbios problem in WinME. I NEVER use Netbios on my ME computer.

I'd rather use WINIPCFG and click on RELEASE ALL, then click on RENEW ALL to reset my network connections on the WinME computer. that's one of the Workarounds mentioned in MS article 269239.