I know this may be a whacked idea but currently I have TT&T installed I'm not so concerned about the speed but as a MMORPG player the regular disconnects cause me grief. TOT came by recently as suggested we switch I would like to try them but don't want to give up my current provider as it is such a hassle setting up automatic payments etc.

Is it possible to have two separate ADSL accounts on one phone line?

It is not possible.

Better you get another phone line and keep both and set them to work togather so in case one down so other works(hope so).

Not possible on the same wire pair. If, by chance, you have extra pair(s) running to your location, then technically, you could have a service line coming in on the additional pair.

Thanks guys I didn't think so but though it would be worth asking.