The title says it all!
Some guys still have problem with zip files I've uploaded. I suggest you download and use WinZip 10.
You can also use this account if your trial version expired:
WinZip 10 Standard
I don't know if it works for you, but if you really need one, you should try that account! Don't worry, it's mine! Or of course you can search for keygens on the internet lol