Yes sir I most certinaly did..
For starters I couldn't use the bracket that came with the case... because I have hard drives in the HDD cage and couldn't move them anywhere else.. If I had mounted the fan with the bracket It would have been to wide and I wouldn't have been able to fit the cage back in. I removed the mounting bracket and mounted the fan directly on the case.. If you open your top front air intake and take off the filter you can see the holes in each corner..
You on the other hand can remove the HDD cage.. So take out the bracket (Highlighted incase you don't know what im talking about)
Mine was a little hard to get out...
This bracket should have holes in it... this is what you attach your fan to.. If your fan dosen't have holes in it.. Line it up with the bracket and use it as a template and drill holes in it.. then use the screws to attach the fan and bracket.. then just slide the bracket back in place.