I need to download ATI Display drivers for my Toshiba tecra S211 but i m not getting it on the net

ATI uses drivers called Catalyst Drivers. The ATI card you have is the ATI Mobility Radeon X600. Go to this link;

http://ati.amd.com/support/driver.html

Select your Vista or XP or whatever your Operating System is from the first list. Then in the second list, select mobiltiy radeon. Then Mobility Radeon X600 from the third list. Then click GO.

Then on the next page use the installation verification software. Once it verifys your hardware is compatible with the driver, it should download and install it.