This is the driver for the RT2300 keyboard, I know it doesnt have to do with this thread exactly but there is people out there looking for this driver and I myself took along time and detective work to find it, so Im simply trying to help anyone searching the internet for this driver. Just trying to give back.
To get the driver for the RT2300, go here:
At the bottom fill in
2: Wired Keyboard 500
3: Your OS
4: Your Lang
download driver, should be called ITP32eng.exe (If 32bit XP)
Remember to select Wire Keyboard 500 when you install.
Set your multimedia keys to your liking!