I bought a cheap wireless adapter on eBay (dumb idea, I know, but I've done it before for my PC and it worked) And I'm having a little trouble connecting. Basically, the program it runs through asks me to input my IP address. Well, I looked it up on my iBook, but when I put that address in, it says something to the tune of "This IP address is already in use." So...am I doing something wrong? Or is this thing just crap like I expected?