Good question!

I agree with Nick that all should be available. But under Limited User accounts, functionality make not be what it should be. In my mind you will just have to check things out and see if there are any issues.

One example comes to mind for my setup. I run SUPERAntiSpyware. When initially loaded, it installed fine for both of my accounts. But after that, each account must update daily definitions separately or they won't be fully up to date. On top of that, full program upgrades must be ran from the Admin account. They won't install at all through the Limited account...