Turn on autoplay popup in xp pro?

Just given a new computer at work with xp pro. I think the tech who hooked it up to set the network settings also turned off the autoplay popup that i am used to on my other xp machines. inserting removable media like an external harddrive or usb traveldrive, or inserting a cd, should cause a little popup that asks me what to do (ie: open a folder to view files). who knows how to turn this back on.