I hope u can help me to my problem.thanks

Hre is a site with the vista drivers for that model
Lexmark X1290 Driver v.1.0.7.1 download for Windows Vista

Can you define for me , Not working?

After the connection to the PC (USB, Ethernet, Parallel) I assume that you are connected to the PC somehow, even wirelessly. Does the PCs, "Found new Hardware." message appear?

Have you been able to run any stand-a-lone tests on the printer and did they work.