Hi, I am new to the forums. I have an HP Deskjet 610CL and my PC is a 633mhz, 256mb running Win2K. My printer has always worked fine - under Win 95, Win ME, Win2k and Linux. I replaced the black print cartridge, and now it will not print black from any applications. If I print a Windows test page, align the cartridges or clean the cartridges, I get black ink no problem. But from all of my applications -- Word, Notepad, IE -- only the color shows up. I have uninstalled/reinstalled the driver for the printer, I have tried different drivers (the DJ 970C and 550C drivers which are fairly universal for HP printers), and I am still having the same problem. I am at a loss, and being that I used to do tech support for HP printers, I still can't figure this one out. Any ideas?