"Winzip 7.0 won't compress my DB any more. It started after I added logon passwords and record locking
on all forms."
When you add workgroup security, by default Access encrypts the file for additional protection. You'll sometimes find that the zip'd file is actually _bigger_ than the mdb!
Start Access without any mdb open, then go to Tools, Security, Encrypt/Decrypt, and follow the prompts. It will insist on a new name for the decrypted version.