Conclusion
Toshiba A30 Laptop
The problem was firstly that the internal modem would not work, I tried to reinstall it by it still did not work. The only thing I picked up from the net was that it maybe a problem with windows updates. So I decided to repair windows. The operation seemed to go OK until the install got to 34 minutes to go, the computer turned it self off and then went into an eternal loop, (34 mins and of etc.). the only thing I could do was put another copy of windows on so I have a dual boot system. I have saved all my documents and emails, I have had to reconfigure the network settings and reinstall most programme but it seem to be working OK but the modem is still not working so I have gone out and bought a PCMCIA modem card that works OK
Thanks for all you help
But I did all this for nothing!!!!