You don't say what version of OS X you are running on that G4
I note that Lexmark has OS X drivers for that machine. They even have Leopard drivers available.
Have you installed the latest drivers for your machine and OS?
Have you checked that your computer is actually using the Lexmark drivers and not the GIMP drivers?
Is the printer capable of direct printing (wired)? If so, can the Mac (That's Capital "C", lower case "ac")(MAC is something completely different)
P
We have a wireless network in our home. All of our laptops (one HP,one Compaq & one MAC G4 access the network with no problems and the internet works well. We bought a Lexmark wireless printer and both of the Windows machines found it with no problem and it prints very well. The G4 has found it and it will print a flawless test page,(so I assume that wireless communication is happening)however it will not print from any applications. IE: Word for MAC. Always says there is a problem with the printer...Anybody have a clue?

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