> Unless I'm mistaken, it's not possible to get two different > versions of the basic framework DLLs to be in memory on any > machine at one time.
Not quite. You can't load different versions into the same process. But different processes can host different versions of the CLR no problem. You don't need separate machines for that. In the case of a COM+ server app running in its own instance of dllhost.exe, this means you should be able to configure different COM+ apps to use different versions of the CLR. I just don't have any experience in this specific (COM+) area that would help the OP... -Mike Bear Canyon Consulting LLC http://www.bearcanyon.com http://www.pluralsight.com/mike =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
