Can't get Silverlight to work on Mac

I want to take the Nutritional Typing Test and downloaded the Silverlight plug in (Microsoft's site even says I have it installed correctly) but when I try to take the test on Safari or Firefox it keeps saying to download Silverlight. I already have and it said clearly installation successfully completed. (I even uninstalled and reinstalled). I wish they'd used Flash or some more reliable program that works across all platforms. I shouldn't have to go buy a PC just to take this test. Anyone else have issues? Google search shows many others have had similar problems with Silverlight (Mac and PC users alike). Thanks for any thoughts.

I am replying to myself. I am already realizing it wouldn't be worth paying for this forum because no one ever or rarely responds. For any other Mac users out there I am solving my problem by installing VMware Fusion which allows me to run Windows on my Mac and have the best of both worlds. I will see if it works later this week. Maybe they'll come up with a more uniform platform version of the NT test using Flash in the future to avoid this problem?

I installed WMware Fusion and Windows Vista Ultimate and I was able to finally take the NT test on my Mac.