For sound, make sure you select the correct driver as a module instead of built in, then run alscaconf. As for the 2200bg, I didn't compile it into the kernel but downloaded the ieee80021
http://ieee80211.sourceforge.net/, ipw2200 driver and firmware from
http://ipw2200.sourceforge.net
You will need the firmware regardless, unzip the firmware package in /lib/firmware.