Change default path for referenced dll's

Hi

When you add a reference to a dll, VS makes a copy of it to the debug directory. I have a few solutions the each builds to a dll and these dll's gets referenced by one app, but each solution also reference each other when needed. Now every solution's debug directory is full of different dll's.

I want them all the be located in one directory. So every time I add a reference, VS can make a copy of the dll in that one directory and only leave the solution's own dll in the solution's debug directory.

How can I tell VS to do this?

Thanks in advance.