*Never mind the exact paths.*

As long as:
you have a clean (that is unmodded) version of RTW, patched to 1.5 somewhere on your harddrive;
and you can still find it;
and you have EB 0.8 downloaded;
and you have installed it properly (that is, following the installer instructions & don't cancel it... never).
You should then be able to play EB...

So if anything went wrong, check the list to see if you might have forgotten something. Also, if you get any weird/ unexpected errors, be sure to read the FAQ...