mp3 player boot

[irivergeek]

I don't know if this has been covered before, and if it has please feel free to show me the link. Is it possible to make an mp3 player (or other USB mass storage Device) boot windows while still retaining hte functionality of an mp3 player? What I'd like to be able to do is still use my iriver h320 as an mp3 player, but be able to plug it into the usb port on a computer and boot some version of windows (98se, 2000, XP....etc) and run say an antivirus program or other diagnostic tools that are loaded on the mp3 player. Basically, I want to be able to take my mp3 player to any computer and boot into the system loaded on the mp3 player. I already know how to make it bootable and get into say a dos prompt, but is there a way to have full windows functinality (even if its win 98se)? Thanks in advance for all your help.