Tethering / Phone as a Modem

[Starfire612]

Could someone explain step by step how to do this tethering thing. My internet sharing is REALLY slow and I would like to try something different. I know the basics of data transfer on the phone to pc but thats about it. If you could talk me through the process like I am a 2 year old it would be very helpful. I have the plain old HTC touch from alltel. Thanks