I’ve bought a Dell Studio XPS with Vista 64-bit and wanted to install a PCI H/W used in the old DeskTop. But the problem is there is no Vista-64-bit driver for that H/W. There is Vista-32, XP-32 driver.
Do I need to install Vista 32-bit OS to run the H/W?
Are there Windows XP drivers for the Dell studio XPS?

Any idea?

Thanks,