I am having problem with a graphic card driver. I had downloaded a driver for ati x550 (pci express 16x). when I tried installing Catalyst Software Suite 7.3 it says it reqires microsoft .net framework v2. So I just downloaded the driver and installed it instead of the catalyst software. from device manager it shows that the driver is installed and working properly. but there is nochange to my graphics. I cud hardly read the text. Only one problem got fix. The one where the windows don't get stuck when I move it. Can anyone tell why is it happening. I cud read the text if I reduce the screen resolution to lowest. like ant size

What size is your screen and what resolution are you trying to run the display at? Also, is it a TFT flat panel monitor or a big CRT type?

I had some similar problem with my card I have some a solution in a tech support site.
Here is the page for your card:

ATI RADEON X550XT PCI Express

I hope it will give you some answers

Marcella