In my company we each IT person has two accounts our domain\user & domain\admin. We run day to day on domain\admin, but when we troubleshoot a user or system we elevate to our domain\admin account and do the work. This gives us permissions and access we don't have otherwise and puts our admin-hats on for the work we are about to do.

Brian,
You could try Microsoft Hyper-V Server 2012 R2. It's completely free and supports the following:

64 virtual processors per virtual machine 1 TB per virtual machine 64 TB per virtual hard disk 320 logical processors on the computer that runs Hyper-V 4 TB on the computer that runs Hyper-V 1024 virtual machines per host server
You can get more info at http://technet.microsoft.com/en-us/library/hh833682.aspx
And you can download it from http://www.microsoft.com/en-us/evalcenter/evaluate-hyper-v-server-2012-r2
Note: It does not include the full Windows GUI as such but you can manage it remotely via Server Manager.
Thanks
Tim