How do I see what files/registry keys are being accessed by my application in Windows?
Check out process explorer: http://technet.microsoft.com/de-de/sysinternals/bb896653.aspx
Microsoft Process Monitor is better at this job. I've tried other tools but they are not as good. And MS is most trustworthy in this case, since it is made by the OS developer anyway
Check out Process Monitor at
http://technet.microsoft.com/en-us/sysinternals/bb896645.aspx
I haven't tried it myself but someone should try Regmon and maybe post how it goes.