Just wanted to post a heads-up. There is a conflict between Microsoft's update KB951748 and ZoneAlarm. Something about that update will cause ZoneAlarm to block your browsers from internet access and ultimately shut your connection down. ZoneAlarm is recommending that you uninstall this update as a fix for right now. Turning your ZoneAlarm setting down to "medium" will also fix this problem, but obviously will reduce the level of security provided by the program.
Yikes... a Zip Drive. (Man, I wonder how much stuff I have sitting around on Zip Disks somewhere?) If you can get an external hard drive enclosure that will work with the drive (maybe eBay?) I'd keep it and copy it over to your current computer.