Please help. I can not find drivers for my Graphic Card!! At the moment I am using Windows Vista and I am forced to use built-in drivers, which has a huge influence for performance. NGO drivers based on Catalyst 7.4 tell that there is no support for my GPU. Please help!!! I can not use all the time built-in drivers

((
Support is for X1300 X1550 X1600 and what about X1400?????????????
Thank you all in advice!
maciej-surdyk@o2.pl