I'm setting up the new MacBook (I'll have commentary on the machine later). I was able to rapidly configure the users with Apple's migration tools, but now I wonder how to give each user access to Parallels. Coincidentally, Mac OS X Hints just addressed this (thanks Andrew): macosxhints.com - 10.4: How to share Parallels Desktop with multiple users.
They don't talk about licensing rules and XP, but I think the basic solution for us will be to have a special user for Parallels, and that user will need to log into an XP account. If the special user has a managed account I can leave it without a password, that should help the switch process for the kids and for me (main users). I do wonder how well Parallels will work for the kids games, and whether I should just go the Boot Camp route.
The RDC options is also interesting, note it requires XP Pro.
Ideally I'd like to "borrow" a copy of Parallels and figure out whether this will really work for us.