I've had the same problem. In order to see my iPod outside iTunes, I use the following workaround:
Connect to my iPod
Click 'Display iPod Options' in the lower right corner
Click the 'Enable Disk Use' check box
Doing this iTunes will give you a warning that you must manually dismount your iPod. XP should immediately find your iPod as a disk drive and try to install the driver, just click FINISH. I've just moved files around and then reset the 'Enable Disk Use' check box to OFF when I'm done. This seems to work even though the driver installation throws an error that looks like the driver is not installed correctly (it probably isnít, but I can still explore to my iPod and get to files). Yeah, itís ugly.
But possibly you can get to your files!
Hope this works for you.