I've used Zip drives under XP, but I have avoided installing Iomegaware, and
I have not used the software write protection.
According to
www.iomega.com, Iomegaware version 3.1 or later is required for
XP. The current version is 4.02, available for download from the same site.
(The file size is 8.21 MB.)
Even if the version you have is new enough to be supported under XP, if you
installed XP as an upgrade over Win98, you might have needed to uninstall
and re-install the Iomega software to get it working properly. (A clean
install of XP would have been better yet, but rather more work.) I can't say
from personal experience that the software write protect works under XP, but
I'd be surprised if it did not work. Iomega has had 4 years to get it
working.
Are there software sellers who'll accept returns? I thought that most would
not accept opened software for refund. (As the XP CD is copyable, and
there's nothing that would prevent you from writing down the product key,
the seller's position is understandable.)
Good luck.
Address scrambled. Replace nkbob with bobkn.