Strange Home Networking Issue

Here is my setup:

Cable Modem-----Router -----Switch
Router Port1=PC1
Router Port2=Switch Port1
Switch Port2=PC2
Switch Port3=PC3

All machines are running Win 2K pro.

I can map a network drive on PC1 to see c$ on PC2.
I can map a network drive on PC2 to see c$ on PC1
I can map a network drive on PC3 to see c$ on PC1

I cannot map a netwrok drive on either PC1 or PC2 to see any drive on PC3.

I can get online from any PC and can ping each IP from any PC.
Any ideas?

 

Sounds like a permissions error on pc3. Check to make sure that the user "Everyone" has full read/write permissions.

 

Log to this page it has a lot of links to instructions to Windows Network Settings, and Sharing.

Link to: Windows Network - Installing & Sharing.

 

I have already done everything suggested on that page, except when I right click on any drive in My Computer on PC3, sharing is not an option that is even there.

 

Is simple file sharing disabled?