Installing NIS 2010 in Parallels 6 for Mac Windows XP Virtual Machine

I am trying to install NIS 2010 in a newly created Windows XP Virtual Machine running under Parallels 6 for Mac. My installation disc is for multiple PCs, so I should be authorized to install it. In fact, the installation accepts my installation key, seems to be installing, and then fails -- and there is no error message. I've tried to install it several times with no better luck.

 

Does anyone have a suggestion how to overcome this?

 

Thanks so much!