Mine is working fine as a network printer.
Get the hpijs driver from the link above and go to
http://localhost:631 with a browser to configure it. The original drivers I got only worked on the color printer cartidge and the printer is still configured that way.
The info on my printer from
http://localhost:631/printers :
HP DeskJet 3740 Foomatic/hpijs (recommended)
Description: HP DeskJet 3740
Location:
Printer State: idle, accepting jobs.
Device URI: usb://3740?serial=CN4B2151M9045Y/