Laptop to TV S-Video Problem

I have a very crappy laptop. the graphics card I'm running is the S3 Graphics SuperSavage/IXC 1014. I have no problem getting my imaging onto my tv, my problem is the sizing. My TV only shows about 2/3 of the screen at 800x600 and less than half at 1024x768. These are the only 2 settings my graphics card gives me. Is it possible for me to make my entire screen fit onto the TV?? Btw, you can see the whole screen on the tv by moving the mouse to the edge and it will scroll over.