Most distros are the same with wifi...yesterday I installed Ubuntu on a friend's laptop with a Belkin FSD6020. Works just fine. Browsing through the Ubuntu tree, they appear to include a lot of drivers with, including the Intel 2x00 drivers and firmware.
As for MadWifi and stuff like that...SuSE has it, but not by default...at least not the FTP install. The box set might have them. And a lot of distros now ship with ndiswrapper, so you can grab your Windows driver CD if need be and it should work ok.