40GB Hard drive from a T22 just purchased...with licensed XP home edition installed, with caddy. What is it worth to you?

I have a T22 with a 40GB drive. I want to swap it out for a reasonably priced 60GB/80GB drive so that I can put a Windows and a Red Hat partition on it. I teach college level students on ISS matters and I need to have the two partitions to switch between the two OSes.

Thanks

Mrwizard10