PerfectPhase -

Thanks for the taking the time to review our offering, glad to see it!

I am however sorry to hear you've had some difficulty with the first challenge.  As my colleague Michael O'Brien stated in his comments, the InnerWorkings challenges for Visual Studio 2005 and 2008 are x64 compatible and should work without issue.  So I am curious as to what may have happened on your machine.  If you would like you can contact me directly and I will work with you to help figure out what may have happened.  My email is jkayler@innerworkings.com, so feel free to send on any details as well as any questions and I will be glad to work with you!