A Dynamic Link Library is a file containing a collection of small programs. These "modules" can be called when needed by other programs that are running under Windows . The advantage of DLL files is that they only get loaded when needed.
The DLLs may cause problems upgrading to betas or new versions of Microsoft Office, for instance. Then one program expects one version of the DLL which has been overwritten by another program.
Copyright (c) 1996-2005 by Michael B. Karbo.