Do you have a TechNet Plus subscription? This is what I use for my testing and test environments. If you don't have this I would suggest it because it gives you access to betas, and full eval copies without time limits for testing purposes (See
link 1 below for the benefits it offers). I originally got mine through Software Assurance purchases.
You might be able to get away with using the standard version for $199 or go for the plus for $349 (renewals are cheaper but not by much). I prefer the plus, but standard should work as it says only takes away the enterprise software and extra support
calls. (licenses actually go for 1 year even though it says no time limits).
http://technet.microsoft.com/en-us/subscriptions/bb892759.aspx - Benefits page
http://technet.microsoft.com/en-us/subscriptions/buy.aspx - technet buy location (can find at distributors Zone.com, PCconnect, CDW, etc.)
http://technet.microsoft.com/en-us/library/dd981009.aspx - details about test environment activations
As for getting around your issue I would contact Prometric through phone support and find out if they will give you an eval key.
