Question Author
Thanks everyone!
Sunflower, hope you got some good tips here :0)
Cockney_si, wottonmel and pcwork - Thanks, I'm going to pay a visit to a running shop over the weekend and make sure I get help choosing the correct trainers. I'm also going to start off by walking (faster than normal) and build up to jogging. Hopefully I will get to where you are in a few months too, wottonmel!
kwicky - I have nowhere to store a bike hence my decision to jog, but thank you anyway.