IL2 1946 wont start, please help!! :(

[Pursuivant]

In addition to installing and running IL2 in Admin mode, it's also possible that you might need to create a separate directory for IL2 outside of the usual Program Files or Programs Files (x86) directories within your C:\ drive (or whatever your primary HD is).

So:

C:\
|
--> IL2
Program Files
Program Files (x86)
etc.

Also, double check that you don't have a corrupted copy due to download issues. In any case, it couldn't hurt to do an uninstall/reinstall in case you accidentally damaged an essential file. (Assuming you haven't done those things already.)

As another diagnostic, open up Task Manager (right click start > Task Manager), try to start IL2 and look for it in the list of active programs or background applications. That will tell you if IL2 is running, but just refusing to open, or failing to start at all. That might help your troubleshooting.