>>TRIDENT!
>>Since VESA times and Windows95 I have not heared anything about them.
>>I tryed to google driver for that model for Window XP but there is no one. The newest driver for that model was for Windows 98SE. OK enough about video.
>>Can you set the refresh rate for monitor to bigger frequency? About 75 or 80 MHz?
>>Not that if you use TFT monitor this can have any effect, but you could try it.
>
>How can I do that? I guess, I just need to ask for a new video card.

Yes you must ask.
About refresh rate:
Right Click on desktop->Properties->Settings->Advanced button->Monitor Tab->Screen refresh rate