My logo looks ragged

[ToxicFarm]

Why my small logo (TF TV font on red background)
looks bad and ragged, in top left corner of TV?
Here:
http://toxicfarm.toxicfarm.com/portal.htm

But, my logo looks good in my livestream page (small TF TV logo above TV )
Here:
http://www.livestream.com/toxicfarm?...tent=toxicfarm


Last night I try to change resolution from 96 to 600px, but I cant make it to look better.
This is not some big problem but he look ugly and like melted.

What to do?

(Logo is in .png format)