Is there any specific reason why you need the dll in C++? If your C++ dll is on .NET framework, you can directly add reference to your c# project. Alternatively, you can use C++/CLI other than C#. So you can use the C++ classes by just importing the necessary headers. Navaneeth How to use google | Ask smart questions

SRogers88 wrote: I have no problem connecting to the loaded PowerPCB reference, but when I try to connect to the other version I crash when I try to use the padsApp object because I am not using the correct version of the PowerPCB reference You can't do it this way. You're going to have to create two seperate wrapper projects. The first is going to have to reference the first version of this COM server and the second is going to have to reference the second version. You need to set references to the .DLL files themselves and not to what you find under the COM tab in the Add Reference dialog box. You're then going to need to re-expose the classes, properties, methods, and events you want to use for each version of the servers, as appropriate. Then, when you get both servers wrapped, you'll add references to both of your wrapper projects and use those COM servers through the wrappers. There is no guarantee this is going to work though. You're going tohave to experiment with this yourself to find out. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007, 2008

This article may help: http://www.codeproject.com/KB/cs/usecomappincs.aspx[^]

SRogers88 wrote: I no really nothing about unicode. I would suggest reading this article[^] for a good introduction. --Mike-- Visual C++ MVP :cool: LINKS~! CP SearchBar v3.0 | C++ Forum FAQ "That's what's great about doing user interface work. No matter what you do, people will say that what you did was idiotic." -- Raymond Chen