Router And Modem Does Not Work Together In Vista?

Is this a wired or wireless connection issue?How to run and post an ipconfig /all output of the computer(s) in question for review.

Who is your Internet Service Provider (ISP)? India - BSNL

What type of Broadband connection are you using? ADSL

What is the exact Make and Model of your Modem, Router or Modem/Router Combo - Linksys, D-Link, Netgear, TP-LINK, etc. TeraCom Type 1

What is the Name of the Anti-Virus, Security or Firewall Software installed from the problematic computer - McAfee, Norton, Eset, Webroot, Zone Alarm, etc.Microsoft essentials.

Modem model Type 1 (TeraCom)

I also have CompUSA Wirelesss Broadband Router, which I am trying to use and make a wireless set up to connect the following devices

1. A Laptop with Windows Vista Home Premium SP2

2. A Laptop with Windows XP SP2

3. An Android 2.3 Mobile phone

I can directly connect the wire from modem to laptop and browse internet - it works. But that is not a wireless network. It proves that BSNL modem alone works.make this network Wireless by using the CompUSA wireless router.

1. The connection set up is as follows:

BSNL TeraCom Modem (LAN 1) ----- wired connection ----- COMPUSA Router (WAN)...... Wireless ....... laptop

2. I can connect to the wireless router by typing 192.168.2.1 in internet browser.Here are the details of wireless router settings

WAN>PPPoE
Use PPPoE Authentication
User Name : ************* (intentionally masking in this forum)
Password : ************* (intentionally masking in this forum)[code].....