Can you say what you mean by unblocking zip files?
Normally if a file is in zip format, (eg myfile.zip), either Windows or WinZip will start the process of extracting the files included in the zip file when you double click it.
Where does this go wrong for you, and what error messages do you see?
Where do these compressed, (zip), files come from?
What .REG file?
Mark
I click the unlock button, it doesn't work.. I've tried WinRAR/WinZIP They both give me some Error... >.> Also I tried that .REG file. What can I do? Also, the intergrated .ZIP thing wont work either.

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