* R.V. Gronoff:

But does the ti4600 support the weird resolutions of the LCD screens
(like 1280x1024 - the control panel only shows 1280x960) ?

1280x1024 is not weird but one of the most common standard resolutions.
Your gfx card does up to 1920x1200 over DVI and probably even more over
VGA. It works with standard and widescreen displays. The resolutions
that are available in the driver settings depend on the ability of the
monitor that is connected to the card.

Benjamin