I have succesfully installed my "D-Link DWL-650+" on my 2.6.8.1 kernel.
Some people say that D-Link make shitty-stuff, but i havent noticed.
I used the acx driver for the card...
well, there is only one thing... the acx driver is so verbose. it types out everything on my screen... but im sure it is possible to turn it off... havent found it yet though...