actually, and i have been looking at doing this, if you have a home pc and a router, you can run clockworkmod and tether to the pc, hook the pc through ethernet to the router as if the pc provides service to the router. get the pc to provide network access to the router which should not be difficult at all, and whenever your phone is plugged to the pc you will be able to access the services via the wlan of your router, no tether client needs to be installed on any computer but the main pc connected directly to the router.
you could also directly broadcast an ad-hoc connection from the pc, but a lot of unrooted android devices do not support connecting in ad-hoc mode, only infrastructure mode.
have not tried it yet, as i do not have a desktop pc only my laptop, but it seems simple enough to do.
