[piranah]

If you have a custom rom, internet sharing should be one of the options when you plug your phone into the usb port. The three options that usually come up are Active Sync, Disk Drive or Internet Sharing. Takes about 30 secs for the net to connect and your good to go.

If that doesnt work, go to start>settings>connections and there should be something that says USB to PC on there. and make sure the "Ask about connection type when i connect" is checked, this will give you the options when you plug your phone in