Hi there. Can someone PLEASE help me with a problem with my modem. It just keeps disconnecting all over the place!

* I have a Motorola SM56 ISA Voice Modem.
* I do not have Call Waiting so it's not that cutting in.
* It's not the phone cable - I've replaced that.
* It's not my phone company (BT).
* I've downloaded the current drivers, and it still doesn't work!!!

HEEEELLLLPPPPP!