Tv out problems HELP!!!

Hey all, hoping someone might have some ideas. I got a problem that I am sure is fairly simple. I just got these RF (radio frequency) Audio/Video transmitters and I hooked the sender to my Geforce 1 256 DDR graphics card by s-video cable-s video/rca video adapter-rca video. That then transmits to the tv by RF... All that doesn't really matter. The problem I'm getting is that on my tv (32" Sony Wega) there appears vertical black bars surrounding the video area. I read up and all I could find is that maybe my tv settings were set to extremes, but I couldn't even find any way to adjust the height/width of the display. I set my monitor at 640x480 and 800x600 and it looked exactly the same on the tv. Anyone have any suggestions as to getting the tv to fill up with the video output from the computer?

Thanks a million.
-A

And you're not going to like tvtool, but it's your only hope.

<font color=blue>At least half of all problems are caused by an insufficient power supply!</font color=blue>