Linksys WAG200G Wireless modem question

Hi I have been offered a Linksys WAG200G Wireless Modem Router for a reasonable amount but I am not sure, as it was 'designed and configured' for use on the Talk-Talk network. It also looks physically different from the standard version, although from my experience with electrical / electronic equipment this usually means everything is essentially the same... should I have reason to believe it is here, and will I be able to use this in place of my speedtouch on BT internet?
Thanks..

 

Thanks TonyT, I gather it is unlikely this device will be 'hard-wired' to talk-talk then, as it seems to be a custom design on the outside?

Sorry if it sounds like a dumb question but I know sod-all about routers and the like

Olly.