I have a more "modern" IBM ThinkPad T40 from 2002 with a Pentium M 1.5GHz CPU, Radeon 7500 (directx 7) graphics card, 1.25GB of RAM and Win XP. The Pentium M CPU was actually pretty capable back in the day. It could compete with the Pentium 4 in many benchmarks and provided very good gaming performance despite have a relatively low clockspeed.
Anywaste, my good 'ole T40 kinda struggles browsing the internet 'cause there is just so much java code and Flash video ads running rampant on the internet.
I power it up every so often just to make sure it's alive.