Nelco, I don't know if this helps, but there is a way to get Excel to randomly sort a list for you. If you are managing a swap and add the names to a list in Excel as people join, then you can copy/paste the names into a 2nd tab and sort the list with just a couple formulas. Then you use another formula to pull their partner over to the tab where you have the list with all their information and you're ready to start notifying people who their partners are.
LOL, I'm such a geek. I was lying in bed thinking about this last night....