>Rick,
>Yes, it is in COMM DLL ... so, there is no way to use multi-threading within COM DLL :(

I think you have a misconception of how COM works. You can call a .Net COM DLL that is multi-threading from a a non-multithreaded COM object.

But you cannot call 'directly' into a COM DLL with AddressOf...

I think you need to understand how multi-threading works in .Net (or anywhere for this matter)... you're not being very clear as to what you are actually trying to accomplish.

+++ Rick ---



>Thank you for your help
>MT
>
>>Where is ProcessCustomData?
>
>>that is really what's at issue here. if you're pointing this at the COM DLL that will >obviously not work...