BTW, whats this 'ieframe.dll' doing in your \support folder in the 160MP download? (I haven't check the latest archive you provided) That DLL is the internet browser, or part of it.
To provide some VB runtime files for some of the utility files there is the OAW150 runtime installer.
It is in the "OAW150Runtmes" folder, and this folder contains a "Support" folder, which includes the "ieframe.dll" among the back-up files.
It is there because an earlier version of OAW had internet links to the multiplayer sites that we used before we found GameRanger