When you create a compressed folder in Windows XP it appears to be a standard zip file but it's not. That said WinZip 9.0 (dated 2004) can read it. However the Windows XP compressed folder support can't read a standard WinZip 9.0 created zip file.
I need to create a Zip file which Windows XP compressed file support can read. However I'm having great difficulty locating relevant URLs amongst the many other hits. I don't see anything relevant at the Winzip Knowledge Base.