network printing problem

[jadams5333]

i have 4 pc's and a notebook linked by both a wired (4pc's) and wireless (notebook) network. I also have 3 printers. I can find 2 of the printers on the network and print from them, but cannot find the third printer. The printer I cannot find (lets call it library to make it identifiable) is connected to a pc and prints fine from that (library) pc. When searching for the library printer, from another pc I can see the Library PC, which has a plus sign next to it, but I cannot open the plus sign to get to a printer below it.
Oddly, the library pc can find the other printers attached to other pc's.
Does anyone have any ideas as to why I cannot find the 3rd printer.

[TimW]

Did you allow the printer to be shared?

[jadams5333]

Yes, it is allowed to share. I can see the PC but just found I cannot ping it, even though I can get internet access "out" from the pc

[Mongoose]

I've set up two or three shared printers myself and what your describing sounds like a firewall problem to me. I would try disabling your firewalls and trying to connect. If it works, then you know what your problem is. If it doesn't... you don't...

[jadams5333]

Switched off Mcafee firewall and "voila" there was the printer.
So thankyou.
What I do not understand is all my PC's have Mcafee and the others all worked with the firewall turned on.
Even more strange, I turned the Mcafee firewall back on, just for grins, and I can still print thru the library pc/printer that was a problem before, even though once again I cannot see the printer on the network having switched the firewall back on.
Anyway, printing happily, so again thanks.

[Mongoose]

If you want to be very thorough you could find out how to configure your firewall to allow the printer through.