Hi Uwe! As far as I understand this issue, the 2.6.x kernels ship an older version of the ipw2000 modules.
You are trying to build 2.6.10, and I think you would be better off with a more recent version, like 2.6.15. Although I have failed to load newer firmware versions with this one too. Good luck and keep us updated on your achievements :) -- .''`. Männer sind Schweine (All men are pigs) -- Die Ärzte : :' : `. `' Proudly running unstable Debian GNU/Linux `- www.amayita.com www.malapecora.com www.chicasduras.com