Cannot network local 4 computers, using 3 vonage routers, (phones connect to each router too), vonage support was not able to configure correctly- set each router to a different ip.. x.1 and dhcp server range.. to x.2-254, shared a folder and printer on each computer, getting error: network not accessible, may not have permissions; network path unfound.

I just started using Vonage myself, but I must ask why do you have 3 Vonage routers? (multiple phone numbers, maybe?)

I simply ran the phone line from the Vonage router to a wall jack and (after disconnecting my house wiring from the phone company wiring in the box outside) every phone in my house was now using Vonage.

If you're doing something really exotic (maybe a network diagram would help), I probably won't be any help. I just wanted to rule out any simple issues.

Good luck,
WallyH

A diagram would be useful.

General comments:
1. If you intend to have 3 separate routers on the local subnet, each router needs a distinct address (seems you did this) with the same network mask assigned.
2. Only one router should be providing DHCP services.
3. All computers must be configured for DHCP assigned addresses, or statically configured outside the DHCP assigned range with the same network mask and default gateway.
4. All computers must be configured for either simple or classic file sharing.
5. Without a Active Directory/Domain server, each computer that is sharing something, must have a local user account of the user that wants to access the share.
6. Sharing permissions must be set correctly on each shared folder.
7. The "Network Access: Sharing and security model for local accounts" Local Security Policy should ideally be configured identically on all computers and the guest account on each computer enabled as desired.

Begin by getting one router and two computers working properly and then add devices.

Sample LAN configuration assuming Windows on computers:

Router:
LAN IP Address: 192.168.1.1
LAN Subnet Mask: 255.255.255.0
DNS Server Settings: Set to whatever was provided by ISP
DHCP Range: 192.168.1.2 - 192.168.1.254

Computers:
IP Address: Configured for "Obtain automatically..."
DNS Server Addresses: Configured for "Obtain automatically..."

Issuing "ipconfig /all" from a command prompt should verify DHCP is working and indicate the computer has had a 192.168.1.x address and DNS addresses assigned. If not or 169.x.x.x address assigned, DHCP is not working.

If addresses are getting assigned, all devices should be able to "ping 192.168.1.1" from a command prompt. If this doesn't work, network is broken and needs fixing first before attempting to get sharing working.

Once network is working properly, post back and we'll work on sharing.