Microsoft released a tool called the Win XP Virtual CD Control Panel. It’s cool because it DOES NOT NEED A REBOOT AND HAS NO SPYWARE AND DOES NOT "PHONE HOME" – and it’s 60kb. Ideal for prod servers :).
When was the last time you got a useful tool that was smaller than Notepad (at 166kb, it’s a bit big, eh!)
Anyway, pull it down here.
32 bit only, sorry. Still, everyone’s got one of those kicking around somewhere 🙂