Need system change logging software

[Nolonemo]

I am looking for a program that will log changes made to the system (e.g., .dlls added or overwritten, registry entries written/changed, etc.). I don't need rollback capability, just something that will log the changes and let me see them (or print them out) later. Freeware is always nice.

Thanks.

[dvorak]

All that, and more, from www.sysinternals.com (FileMon+RegMon).