If you don't have a slow cooker the next best thing is just to use your Gas or Electric Hob with a Simmer Mat between the heat source and the base of your pot.
I use one all the time for slowcooking, you turn the gas to its lowest setting and cook for as log as you want.
Cheapest I've found online are from EBay, regular prices go from about £7 - £15 - EBay do them from £1.50!
>
http://www.ebay.co.uk/itm/like/33098...f13=80&ff14=95
__________________
ad nauseam - ad infinitum!