the whole servicing process takes about 30 minutes, if your edges are ok then a wax shouldnt take more than about 10 minutes
Dakine do a kit for about £60 i think that contains everything you need, but if your just waxing then just buy some all temperature wax, an old iron (doesnt have to be specialist snowboard iron, as long as you can turn off the steam

) and a plastic scrapper of some description. The scrapper doesnt have to be sharp, it just needs to have a flat rightangle edge and be firm enough to get the wax off...ie not a credit card
Some base cleaner might be good as well if you've been riding domes
i'm abit far away to show you in person though, sorry
I live in Northampton so if you want someone to show you how (it's really dead easy) then give me a shout and I'll help out
I learned how to wax my board from this guy...
http://uk.youtube.com/watch?v=RDRoKCAFtX8