With a fresh install there will not be many "codecs" except what Microsoft installs. Your install looks incomplete to me since I read that you only used the Microsoft supplied items. Drivers for motherboard, video, audio, directx, and such may need updating as well as codecs that Microsoft will not supply.
I would run IEFIX (google.com) then read http://www.moviecodec.com
Since you have replaced some dll/ocx/other, the OS may be damaged so you get to reinstall.
Strange error with the Millenium Preview program. I installed Me clean on a fresh partition, and updated with the Microsoft Security Update Cd and Windows Update. Had ZoneAlarm installed for the net and use McAfee and Spybot S&D.
I click on "Windows Millenium Edition Preview," and it opens the colorful screen with the picture of WMP7 in the middle. Then an Internet Explorer Script Error box opens stating:
Error: Could not complete the operation due to
error cood 1327
URL: file://C:\WINDOWS\Application Data\Microsoft\
I tried out the intructions in the Microsoft articles 274486 and 265371. Essentially, I replaced the Wshom.ocx file with the original one on the Me cd. This file is smaller and older than the one on the system. That made things worse, as the program opened to a black screen unadorned by any cool colors or the WMP7 photo but came complete with the usual script error message. So, I used System Restore and got back the original file that at least showed the screen.
I managed to register by running regwiz /r, and all the Help and Support Center stuff seems to be working fine. It's just that program that won't run. So, no preview movie or the following intro sections are available.
I noticed the Shockwave picture trying to open before the error message popped up, so I made sure to update to the latest Flash and Shockwave. They work, but this program still doesn't. I also tried running "Regsvr32 \Windows\System\Macromed\Flash\Swflash.ocx" to see if the older version would run the program, but no go.
I also ran the IE repair tool. No change.
It's IE 6 SP1, WMP9, DirectX 9.0c on Me completely updated and running fine, except for this.
I miss the movie! (Even though it usually gets watched like once, before registering.)