I have a particular question that may be useful to the community, but I already know a possible answer.
Am I able (allowed) to submit an answer to my own question?
I'd hope that anybody would be able to submit an answer, including myself.
I think that is OK, in podcasts Jeff and Joel even used to encurage it, so go ahead.
It's not only OK, it is encouraged, if you have a good answer.
There's a similar discussion on meta.stackexchange.com, take a look.