Systems Management

I would say, to answer your question, the extensions to look out for are .inf and .cat

Another simple way is to goto Start>Run>msinfo32 . THen Expand Software Environment. Goto System Drivers. Copy the whole right pane displayed (Ctrl-A & COpy). Save the content in a text file & name it something like Application_before.txt (just for ref) . Install ur app. Repeat the process . Now save the file as Application_After.txt. Compare both the files in a text comparision tool like beyond compare/windiff/examdiff/csdiff etc.. This can be done for Services, Environment variables etc.

Have you seen this link?

http://www.symantec.com/connect/articles/creating-installations-device-driver-applications-using-dpinst

I always take a capture while doing a source validation. Just to see what all it is installing. I am not saying to use this capture, but just use it to see what it is installing. Saves you a lot of time that to look around what the application is installing.