MAC Driver for Dell Printer
Imac, Mac OS X (10.5)
Imac, Mac OS X (10.5)
Dell are one of the few manufacturers who don't seem to offer Mac drivers for printers. Gutenprint (an open source print driver doesn't cover them either). I've also looked through online reviews to see if this AIO is based on say a Lexmark or Canon engine in which case it may have been possible to use that driver but I can't see any evidence of that.
If the Dell is still set-up and running you can share the printer over a network:
http://www.ifelix.co.uk/tech/3015.html
mrtotes
BTW this forum is for iMac (CRT) (aka iMac G3):
I assume that you actually have an Intel iMac:
MAC Driver for Dell Printer