that's only an 80G hard drive. do you still have access to the laptop to just copy the files over to your modern system using USB sticks or over a home network? or anyone you know that has one of those USB-to-IDE/SATA cables to help migrating stuff over?
honestly, for only an 80G space gain, i'd spend money on a new large drive that doesn't need converters IF you can borrow some cable to make the transfer. heck, i have one which i used only 2-3 times, and it's been sitting in a box somewhere for 2 years.