Been using HP C5100 series all in one printer at home. It's going to wife's work now. QUESTION: Since laptop needs to use C5100 at work & C6200 at home, on the LAPTOP, should I install the new software OVER the C5100 - assuming the C6100 software is backwards compatible & handle both printers? OR, UNINSTALL the C5100 software on laptop, & hope new C6100 series will handle BOTH printers (once separate printers are set up in Printers / Faxes)? To complicate a bit more - laptop connects thru wireless network at home, but will connect to C5100 w/ USB at work. I uninstalled ALL C5100 on desktop & installed new software. At 1st, it only allowed installing into OLD C5100 folder - said "in order to work w/ other installed HP products." There were NO other HP products left installed, just leftover registry keys their uninstall prgm didn't delete - I deleted them, & everything was good. NOTE: the printers are similar but some different features on new one, w/ different "Solution Center" GUI & diff options for things like scanning on C6100 that weren't w/ the C5100 software (even latest ver). Thanks.