When I run my Win32 project in the Visual Studio debugger, I get this huge screed of output about which DLLs were loaded, first-chance exceptions, and so on.
Is the
Right click in the output window. You'll get a popup menu where you can de-select types of messages you don't want to see (e.g. Module Load and Module Unload messages). Unfortunately, it puts all the Exception Messages together, so (at least AFAIK) you can't exclude first chance exception messages (which you rarely care about) but keep second chance exception messages (which you usually do care about).
Click with right mouse button on the Output window and switch off "Module Load Messages".