Set Windows Vista to handle Zip files

If you would like to set windows vista back to handle zip files again you should ensure that the key in the registry looks like this:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.zip]

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.zip\OpenWithList]
"a"="ieuser.exe"
"MRUList"="a"

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.zip\OpenWithProgids]
"CompressedFolder"=hex(0):

If any other sub keys are present delete them. Restart windows if needed and your done.