Wireless Keyboard and Mouse under Windows via Bootcamp?

I just finished installing XP Pro with Bootcamp on my mac desktop, and the wireless keyboard and mouse do not function. It does however work with my USB mouse from my PC, but I dont have a USB keyboard on hand at the moment. The bootcamp instructions call for a USB keyboard and mouse. However, the wireless keyboard and mouse WERE fucntioning for a bit during the installation and initial setup of XP, but ceased to work once I inserted the Leopard disk and isntalled the bootcamp divers. Any way I can get them working again so I dont have to buy another keyboard and mouse?