Dont know if you people already know this.. but the search for "winzip" didnt gave any results to me. so here iam.
Steps:-
1) Winzip 11.1 available from official site for free (demo version).
2) right click it and select "open with winrar".
3) clear all mess (google desktop search and google IE bar exe's ) keep only the winzip msi.
rest you know ;-)
and to register it just export HKLM\Software\Nico Mak Computing\WinZip\WinIni and HKU\Software\Nico Mak Computing\WinZip\WinIni.
create 7zip or rar archive and use with WPI or i386\svcpack or any other method you feel comfortable with.
hope this helps.
and if a repost, mods plz do whts is appropriate with this post.
MSFN rocks !!