Huzzah, Thinkpad!
I've been toying with NetStumbler on my 701C, which technically should have died years ago. Originally a 701CS, it has been rebuilt with parts from a gutted C, and the system board replaced with an overclocked model (133MHz AMD @ 33MHz bus), and a 64 meg RAM chip slotted in.
Battery life is now "brief" (1hr 20 at best), but the extra grunt is worth it so long as you don't wander too far from a powerpoint.
How long will you keep your unit alive for, do you think?
AP