Hi marple38kv,
A warm welcome to the eForum.
Sorry to hear of the issues you are experiencing with your USB Modem but I am sure I can throw some suggestions your way to get this resolved.
First of all, please check out
this thread, Jen dealt with a customer in very similar circumstances as yourself, so if you could give that a go and see how you go on.
If you need anything else or further support on this, please let us know.
Thanks
Andrew
eForum Team