One of the best features of Windows Mobile 6.1 is the "Internet Sharing" capability. This turns your smartphone/pocket PC into a wireless modem for your laptop/notebook/tablet/UMPC. No need for a separate wireless card.
It's so great to stay connected so easily. You can connect via Bluetooth or through a USB connection. Some call this tethering, but Windows Mobile calls it Internet Sharing.
Make sure to keep a spare battery handy. Or, use the USB connection to keep your phone charged up.