A google search on "refilling inkjet cartridge instructions" should give you a load of information on this topic, however
this organisation provide a great deal of free information on refilling cartridges as well as suppling the necessary bits and pieces.
Experience has shown me that wheras refilling black cartridges for chipped Epsons and HP units is cost effective, refilling the five colours in photo epsons is not easy to achieve. Because of the difficulty in removing the trapped air, you can waste over half a cartridge of ink before all five colours are running correctly and then for how long? I would love to find the secret, but despite much effort, wasted ink and research it has so far eluded me! The three colours required by my HP unit, seems easier but I still get air sometimes. Of course refilling HP cartridges is more cost effective because of their enormous cost as they contain the jet mechanism as well. Look at the price of refilled "epson" colour cartridges
here . Is it worth the mess of refilling them yourself? (Excellent colour by the way)
best of luck,
P.P.