Did some blog reading today, and found out several assumptions I had which were wrong:
Assumption: "Protected Internal" means both protected and internal
Wrong: It means Protected OR Internal.
Assumption: 32bit Windows is limited to 2/4gb ram
Wrong: It's limited to 2gb of ram per application.
Assumption: OpenFileDialog is harmless
Wrong: It loads a mini-explorer, including all the extensions you have installed.