Hi nurse_gal, I'm guessing you would need to get a self powered USB hub at the very minimum, as the USB cellular cards come with a cable that can draw power from up to 2 USB ports at once (and the N8x0 doesn't provide power out the USB port). You'd also need an adapter like this and another like this. With those then the trick would be typing the command 'dmesg' before and after you plug in the USB card and seeing if its probably detected. Finally you would use wvdial or another PPP program to initiate the connection (hints provided at the links in the first couple posts).