>In our current VFP program many of the reports call methods from classes that are used for doing things like calculating the current interest due on a loan etc. We are planning on using Crystal Reports 2008 (12) to generate reports in our new project. At first glance there does not appear to be any way for a Crystal report to access a method in a VB class. Would someone out there with experience in these matters please tell me that we are wrong in this conclusion. The alternative is to write fairly massive amounts of Crystal code to do things already done. A sure support nightmare down the road as well as a time waster now.
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>Thanks for any help.

It can only be done via com because Crystal is not managed code. That was one of the reasons we chose to go with SSRS instead of Crystal. I put together a comparison chart of the two. If you like I can send it to you. You may want to research the items and see if anything has changed. I know that the new features in the local reporting engine due in the final released version of VS2010 will remove some SSRS limitations we found.

Create the UFL (User Function Library) to handle that (goto page 389):
http://www.businessobjects.com/global/pdf/dev_zone/VS2005_Walkthroughs.pdf

(You have to create the interface with com attributes)

If you search the forum you will find my messages on it when I was researching the same requirement.