[8FS_Bulau]

I've made sure to install everything into the single folder of 1946..
Ran the JSGME and activated the History Mod.. Startup screen, same as ever...

Since you have the DVD, there is nothing else you need to download...it should work, but obviously is not...there should be new startup screen.

Did everything work after 4.09m patch, but before HSFX install?

What is your O/S? If Vista, or Win7, you may be able to fix this by moving, copying, or reinstalling the entire game folder somewhere outside of Program Files, like c:\games, and running it from there.