[Xpert]X server problems

[pemo]

I have a laptop Toshiba Satellite 5105-S607 equiped with NVIDIA GeForce4 440 Go card and a Toshiba's 15" UXGA TFT (1600x1200) display.
I'm trying to make RedHat 7.2 working on that system, but I have problems with making X server to work. My current version of X is 4.1.0.
I wonder if anyone knows what should be done and if the current version of XFree86 can handle this graphics card and display.
Would update to 4.2.0 help? If yes, then how to do it better?
Any advice is appreciated.
Thanks.
Paul