I have the Dell TrueMobile 300 Bluetooth card and it works great. I use it to connect to my Bluetooth Nokia 3650 cell phone so I can access the internet(mainly MSN Messenger) while I'm at work or away from the house.
If you don't have a home WiFi network at home you can get a Bluetooth USB plugin from CompUSA for about $40.00 and use that to connect to your computer and the net wireless ... But you only get about 30 feet distance on the Bluetooth connection ... But then again its better than trying to use the Axim from the cradle ...