The good news is that it sounds like you have the body for running.
Bad news is that you are at a pretty serious disadvantage if you hate running.
I think that can be overcome, though - particularly if you run with a goal in mind (like the support of Aids, for example
). Folks I know that don't like to run but do it to get in shape swear by their iPods (I never wear them outdoors but will on some long treadmill runs).
Two months is not a lot of time to get ready for a race, but you can certainly improve your fitness to a point where you *should* be able to at least do the entire 8k without feeling like you are 80.
Jeff Galloway (
website) is probably the top "beginner running" coach out there and he is a regular contributor to Runner's World. I would spend some time at his web site. He has extremely reasonable
5k and 10k beginner training schedules.
Stick to that. Once you finish a race for which you have trained, I am willing to bet that you'll want to do it again so that you can beat your previous time or just so you can recapture that feeling of crossing the finish line.
Then all of a sudden you'll be a runner!