If you go to the HTPC section of AVS Forum you will find a file from KARNIS which I printed out 4 yrs go and still refer to.
The video cards and tv's may have changed but a combination of your vid cards UI Powerstrip from www.entechtaiwan.com
and a little work you can fit rezes from PC to TV that will be ultra crisp.
The caveat is (particularly for CRT tvs) do all of the work on you PC's monitor before trying it on your TV. It can be tough on convergence for one thing.
PS: check out other utilities like Multires at Entech as well. Registration is for life and customer sevice is lickety split