Well, I built the kernel without too much trouble, it seems. Took 5 hours, but this was to be expected- I'm doing this on a PII.
The new kernel broke madwifi, but that's to be expected, too, I suppose. I guess I have to build it myself.
My question is: All this stuff eats drive space for breakfast, and I wonder what -if anything- I can delete. The .tar.bz2? the .debs?