Installing Wireless router on Sify

[stella]

Hi All,

I have a Sify Broadband connection. I am trying to install wifi router Netgear WGR614 at my home. Since Sify requires authentication through their own dial up software and also gives static IP address, I have been unable to do so.

I tried changing the settings of Netgear and when I connect my laptop via router, I was able to authenticate the connection and get on the internet. However, as soon as I switch to wireless mode, the system is unable to authenticate and it says that the machine address as registered is different from the one I am trying to authenticate. i tried changing the settings in Netgear to use computers MAC adddress and it worked fine in wired mode but not in wireless
Can anyone who has set up wifi with a single laptop at home for Sify provide any clue.

Any help in this regard will be highly appreciated.