Network issue - seeing PC's

[AHarvey]

Hi all,

In my office I have 2 desktops and a netbook, all connected via a Netgear router.

desktop 1 is my PC, connected with wire.
Desktop 2 is the wife's PC and has the printer attached, connected with wire.
netbook is mine connected through wifi.

All running windows 7.

Netbook can see and access all of them including the printer.

Desktop 1 can access the netbook, but gets a "windows cannot access" msg when trying to connect to Desktop 2.

Desktop 2 can access everything.

And its really annoying because I need to print from photoshop on Desktop 1 using the printer on Desktop 2.

Any idea on what to try?

 

[Deception]

Made sure sharing is set to allow printers on the relevant PC's? can do this via Network and Sharing Center on Windows 7. Also might be worth sticking them on same Workgroup.

 

[AHarvey]

It all set, as for the workgroup, when I try and adjust it on Desktop 2 it just comes up with an error message. Ran diagnostics and its telling me there is some sort of error.

It needs reformating anyway so i'll just start from scratch with it!