Need some TV - Monitor help

[Fishermaaan]

Hey guys.
I downloaded a film, DVD quality, and it is DVD quality when played on my 19" Monitor.

However, when I connect my PC to my 26" Tv, the image isn't DVD quality, it's stretched.

Well, I have Vista, and can someone tell me how to keep it DVD quality (prevent it from stretching, keep same contrast) when I play it on my TV?

Thanks :D

[DrLacero]

Change the aspect ratio on the video (VLC media player can do that).