VGA Question...

I have the Treamcast VGA box and it has hook ups to hook it up to a tv with A/V cables. My question is..if I hook it up to my tv with this VGA box will it display at a higher resolution on my TV or just on my PC monitor?
yeah, the A/V jacks are so you can switch between playing on the tv or on your monitor. tho after seeing Skies and GGX youll NEVER want to go back to the old TV :)