Take a look at my Buffalo team, yea I am not that great, but I have built a pretty decent team, when I took over it was at a D- prestige, and I am now up to C+ and have made the NT the past 2 seasons and just won my first Coach of the Year honors there.
Like I said it isn't great, but if you truly like the game and are willing to stay and build your program you can do it. The MAC wasn't the best conference when I first took over, but slowly it is starting to be good. I believe we had 3 teams in the NT and 1 in the PIT this past season.
It may take a few seasons, but if you know what your doing, and know how to build a program, I'm sure you can do it. Like I said just have to stick with it, and not get frustrated like so many others (I'm guilty of that as well) but thats WIS for ya lol
Good luck if you do.