Crystal reports Viewer isues with VS2010. It used to be easy in vs2003

Question

I recently upgraded from Visual Studio 2003 to VS 2010 and I'm having problems with Crystal reports.
Before it was easy for me to use the crystal reports viewer and load the seleted reports by the user on run time.
Now the only way I see the crystal reports viewer is if I change the compiler framework to an earlier version not 4.0.
What should I use to view crystal reports 2008 reports in my windows application?
anything as easy as the viewer was in the 2003 version?
Thanks