How can I tell what my program is loading or is loaded with my program?

What I want to do is basically version check to make sure that the dll's, ocx's etc are the same or better than the ones that my program was installed with.

So, what I need to do is dynamically check a version number of a dll, ocx at runtime. I want to know at the time that it loads so I can warn the user that the program may not work correctly and alert the user that a dll, ecx etc is out of date or has been changed and of course put it back if nessecary.

Is checking the version number possible at runtime. Must be dynamic. I do not want to have to know before hand what is going to load. Can this be done?

Are these dll's and ocx's ones that you are writing or are you referring to the ocx's that you build into your program like the MS Common controls?

Actually, I want to detect any system, private or public dll, ocx etc.. mainly to make sure my apps do not get blind sided by an older dll, ocx etc that was installed after my app. Of course that my app might need to use.