I got a copy of WinZip last week for my x64 box because I needed to unzip a gzip file. I later realized that since I'm running a 64-bit version of vista, the handy WinZip context menu shell extenstions won't work (unless I run a 32-instance of explorer.exe). This was a bummer because I like being able to right click on an archive and extract it. I know Windows has had built in support for this since XP but it requires me to click one more time than winzip does so it's not as quick. In any case, not having the optio nto use WinZip, I wanted to go back to using the built in windows handler for zip files since it works fine (except for that one extra click I have to do).
How do you restore the default .zip file association in Windowx XP or Vista? It wasn't as simple as right clicking and selecting "Open with.." which is what I tried for about 5 minutes. turns out you can restore it this way though:
cmd /c assoc .zip=CompressedFolder