@m1screant:
Some TFTs need atleast 56Hz to display something and thus does not display scandoubled PAL (50Hz).
Check the specs or try it before you buy it or get a deal where you can return it if it doesnt work.
The preferred resolution on TFTs comes from the fact that they have distinct pixels - one element for each pixel and because of that they only have one resolution that can be sharp, other resolutions are scaled to that resolution in realtime by circuitry in the TFT and wont be sharp.
For games that is not a real issue, but for desktop use you will want to use the preferred resolution.
/Patrik
