I work for one of those consulting firms mentioned by Carlton, and let me tell you that we are the only company to have developed an in-house (proprietary) tool that helps us jump start the conversion process from RPTs to RDLs. Our current tool only supports Crystal Rpts 9 and older, and the RDL 2000 and 2005 formats.
I have done several of these conversion projects myself, and there are lots of things that cannot be automatically converted due to the nature of each product. Things like expressions, data source information, and dataset queries just cannot be automagically "translated" by a tool.
Cheers.