Good advice, beanz, the RW training schedules are not beginner-friendly. I'm a big hal higdon fan, and can recommend his stuff.
Pippi, I can't really offer much detailed advice for a regime to follow, but why don't you consider joining a local running club? They tend to be very welcoming towards beginners, and you'll get as much guidance as you want. If this isn't feasible, why not do some reading? There are loads of good running books out there. Have a wander round Amazon or one of the big bookshops, and you'll find something to suit you that can take you forward.
The other suggestion is that you think about moving up to a half marathon in the Autumn, and following a training schedule to get you there. This will provide plenty of structure and discipline to your training.
Good luck
Andy