GameShine

Dear OSXLatitude, I have a MAJOR (little..) problem. I've just upgraded my Dell Latitude D620 to Mac OSX 10.7.0 (Lion LOL). Everything is working, except the wifi. I have a intel proset wireless in it. I have read in other topics that this wifi card is not supported, so i'm stuck. I have no idea what to do now. Will it work if i buy a wifi usb dongle? If not, what can I do? Kind regards, GameShine Animations P.S. I remember that there is a slot on the left side of my pc where i can put a sitecom wifi card in. Will that work, too?