Heres a word of advice seeing you're new around here...READ!!!
There are tons of info available if you take the time to read through some of the threads and actually ask a legit question...you'd find most of what you need to know by doing so and not embarrasing yourself.
I do rosters,settings,edits and almost anything eles I want to do to this game including hours upon hours of actual research and game testing, it has its rewards but if you're serious you should start at the beginning and "READ" what has been offered and posted in the threads.
The alternative would be to have someone do it for you.
You really should at least attempt to read the threads and get a clue as to what it takes and what it envolves then ask a legit question, if you should find the whole process is too much of a burden then I'd suggest DLing (downloading) one of the available roster files and reading somemore.
Welcome to "OS...Da Spot", hope you enjoy your stay and membership here!!!
Holla Back y'all
Rickster101