Yeah mate, that's how TV's are I hate to tell ya! TV's have a very low res, but you rarely notice it when watching television because all writing on ads is made big...
Your best idea would be to lower the resolution that you're displaying it at. 640x480 will be much clearer, simply because everything is enlarged... If you were trying to run it at 1024x768 or something, there's no way you could read anything!
Hope that helps
Jeremy