I have managed to get the problem to go away, only time wil tell if its fixed or not.
Took the advice and got the new drivers from Alcatel, and also bought a USB / PCI card (£17)and spread the load of the devices over the ports and this seems to be doing the trick but it was still disconnecting after 2 hrs, called BT and it seems that there was a hang over from BT Anytime on the line at the BT end where it is set up to disconnect after 2 Hrs, after calling BT and them doing some black magic, I have had an almost perm connection to the net.
Thanks for all the useful advice.