D&C;
WinZip or another third party zip program installed?
From XP HELP:
[[To extract files from a zipped compressed folder
Open My Computer, and then locate the compressed folder.
Do one of the following:
To extract a single file or folder, double-click the compressed folder to
open it. Then, drag the file or folder from the compressed folder to a new
location.
To extract all files or folders, right-click the compressed folder, and then
click Extract All. In the Compressed (zipped) Folders Extraction Wizard,
specify where you want to store the extracted files.
Notes
To open My Computer, double-click the My Computer icon on the desktop.
You can identify compressed folders by the zipper on the folder icon.
If the file is protected with a password, you must provide the password
before the file can be extracted to the folder you specify.
When you extract a file, a compressed version remains in the compressed
folder. To delete the compressed version, right-click the file, and then
click Delete.
When you extract a file from a compressed folder that is password protected,
the extracted file is no longer protected.]]