That's not really necessary. A dll can be in any directory as long as the app(s) that's using it knows how to find it. There are precise rules on how an executable (app/dll/ocx) looks for a dll. These rules are explained in the Help/MSDN for LoadLibrary API function. Besides all rules, an app can open any dll from anywhere by specifing the whole path (although not recommendable).

Vlad

>.DLLs need to be present in the system path, which normally means installing them to the directry resolved as the system directory by Windows.