Did that yeeears ago with RegMon. I'm still sorting through it\seeing a therapist...you can usually do some sort of installation on "REAL" windows, and compare pre and post installations.
Did that with my old ADSL modem. Gave up around fourth "level" in. Ditto therapist....figure out what libraries need to be added to the tiniest of cores to get the functionality you need to run the application you really want to provide.
Yeah, detected some "antipathy", and stuff, between some of you, in my other thread....it's not often you get wonko, paraglider, pscEx and me all in the same post!)