Hi Eric,
Yes, there are no 64 bit libraries back then but now there are and you can use CR. NET assemblies in a C++ app. There is one sample in the sample WIKI:
Crystal Reports for .NET SDK Samples - Business Intelligence (BusinessObjects) - SCN Wiki
Another way that has been suggested also. As long as the data is not that big you can still use a Dataset and point your existing reports to the DS.
Thanks again
Don