hiya
you might like to have a read of one of Robin Walkers superb pages from his website
http://homepage.ntlworld.com/robin.d...al.html#reboot
which shows how to get to the modem diagnostics & gives some advice on what the range the results for power level etc, should fall into.
Note also that he lists a number of other potential causes for this behaviour, including that the modem itself may be faulty - let us know how you get on
