TestDirector 7.6 with Windows Vista???

I'm new to Windows Vista and seem to be having problems installing TestDirector 7.6
My error message is:
(Microsoft Internet Explorer : 4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; InfoPath.2) is not supported!)
Is there any work around or system settings to change?

Thanks for any assistance you may be able to provide
:confused:

I think you need to contact Mercury help desk if you have licenced copy or if pirated then call Microsoft help desk