Visual Basic, Crystal Reports, DLL (200

Hi
I got the following situation. I have a big project with multiple reports using Crystal Reports 8.

I use Report Viewer to display those reports.
I want to get those reports from a dll, because i want to reduce the size of my exe.

I put all crystal reports designer in a active x dll, but I dont know how to call them from my exe.
Ok in my exe I have report viwer control in a form y i want to get the report from dll and asigned to mi report viewer.

Thanks For Your Attention