What does the program winzip do for the files on computer?

It does unzip files, extracts folders and other things. You can just play around with it and find out what it does.

WinZip is used to create and extract zip files. Zip files are a convenient way to transfer data over the internet, because they take up less space and can hold more than one file inside them.

Winzip opens files which are of the format .zip .

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You have to download Windows Easy Transfer onto the XP machine and gather your files that way. Windows Easy Transfer comes with Vista. If you run it, it will give you instructions on how to proceed.