tools

Do you mean Dependency Walker, "...that scans any 32-bit or 64-bit Windows module (exe, dll, ocx, sys, etc.) and builds a hierarchical tree diagram of all dependent modules. For each module found, it lists all the functions that are exported by that module, and which of those functions are actually being called by other modules."

If you do not have Visual Studio, you can get the free utility from http://www.dependencywalker.com.

Also Try process explorer

http://www.sysinternals.com/Utilities/ProcessExplorer.html

IT will tell you what process are accessing which dll's and you can also view the handels being used.

wow. this isn't an answer, I just wanted to say thanks. Those are going to be some useful tools!