How to Debug Injected DLL

I am having an issue inside an Injected DLL and writing to a log file just isn't enough to solve the issue.
I do not know how to make Visual Studio Debug the Injected DLL, I can debug the application doing the injecting just fine. If I set a breakpoint in the DLL it does nothing.

Any help is appreciated...

You need to execute "Debug - Attach to Process" command in the Visual Studio debugger. Attach to the target process where Dll is injected.

Thanks Alex, don't think I have that option, currently using VS Express 2010 Beta 2. Will upgrade :-)

You can use also WinDbg from Debugging Tools for Windows, which is available for free download. Less convenient than VS debugger, but more powerful.