Is this throught the Crystal designer, or in an application using the Crystal runtime engine?
The following .dlls are need to exporting to 'other' destinations (this is for CR 9):
u2dapp.dll
Application Export Destination DLL for Crystal Reports.
Location: \Program Files\Common Files\Crystal Decisions\2.0\bin
u2ddisk.dll
Disk Export Destination DLL for Crystal Reports.
Location: \Program Files\Common Files\Crystal Decisions\2.0\bin
u2dmapi.dll
MAPI (Microsoft Mail, Microsoft Exchange) Export Destination DLL for Crystal Reports.
Location: \Program Files\Common Files\Crystal Decisions\2.0\bin
u2dnotes.dll
Lotus Domino Export Destination DLL for Crystal Reports.
Location: \Program Files\Common Files\Crystal Decisions\2.0\bin
u2dpost.dll
Microsoft Exchange Public Folders Export Destination DLL for Crystal Reports.
Location: \Program Files\Common Files\Crystal Decisions\2.0\bin
u2dvim.dll
VIM Export Destination DLL for Crystal Reports.
Location: \Program Files\Common Files\Crystal Decisions\2.0\bin
-dave