Inkjet refill kits?

[Cyberian]

Anyone have a recommendation?
I've got 3 (Lexmark) inkjet printers, and all of the black cartridges are empty.

 

[Noirish]

ink4art.com for generic solution.

 

[Ornery]

I bought a NuKote kit from Walmart for use in my HP 895. The ink was runny and results were poor. I returned it to Walmart! If somebody can recommend an alternative, that's returnable if it doesn't work out, I'm all ears.