Strip down requited, and some new seals. it's hard to say exactly what seals you have in there, but some RS forks have, below the grey dust seal, a foam ring then a seperate black oil seal. That black oil seal is a standard hydraulic ram seal and can be bought quite cheaply (£1-ish). from a bearing/hydraulic supplier. If there's no 2nd black seal, you need the grey dust seals instead
3rd one down here
http://www.tftunedshox.com/Catalogue/Shop-RockShox/RockShox/RockShox-Fork-Spare-Parts
To be fair though, if you're having them apart anyway, you might as well do a full service, and it's not that much more to seNd the fork off to TFTuned to do the job than it is to buy all the parts, seals and oil yourself. And they resize the bushings too, as part of a service, which you can't do yourself and makes a big difference.
It's not a hard job to do a full service (IMO) but you need a few tools (e.g. – 24mm socket, circlip pliers) and a reasonable level of mechanical experience to DIY 🙂