Windows XP SP3

This has been a problem for some time. I go into PROGRAM CONTROL --> PROGRAMS. I delete just about everything. Close the control center or even just go to a different area of the control center. Then when I come back to PROGRAM CONTROL --> PROGRAMS, many of the ones I deleted moments ago are back as if they never were deleted. Now, I do understand that if something is currently running it might pop back in on it's own. I get that. But applications that I myself wrote that are absolutely not running are showing back up in there. What's the deal with that? How does that happen and what's the cure???