Network printers work best if they can connect directly to the router or to a compatible print server that connects to the router or network switch. Printer sharing is full of quirks.Wired is best but wireless will work. With a printer configured this way, you just install the appropriate driver on each PC and point it to the printer port. I can't envision your setup here but if your printer is network ready, this is usually fairly simple. Any more details to offer?
I just purchased a new computer running Win 7 Home Premium. The problem I have is getting my Laptop (Win Vista) and my Desktop (Win 7) to share the same printer (HP Officejet 6500). The Win 7 machine will only share with other Win 7 OS. Is there a way to get the two machines to work with each other? The laptop goes though a wireless router and the desktop is wired. If I installed a wireless network adapter on the desktop would that work? The hp printer can be USB or setup for wireless. Right now it is USB because the desktop is not wireless. Does any of this make sense? Thanks for any help
Desktop-Dell Studio XPS 9000 Windows 7 Home Premium 64bit
Laptop-Toshiba P105-S6187 Windows Vista Home Premium 32bit
Printer-HP Officejet 6500 E709N

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