I am having a problem with a PCTel PCI Modem in XP. Modem is recognized and I can talk to the modem using the XP Diag window on the Modem properties dialog. But, the modem will not go off hook, it says there is No Dialtone, but one exists. This happens in 2 houses with 2 different tel #'s, in fact it is in 2 different states... Any ideas?