Fax Server Information Cannot be Retrieved

Hi, I've recently (since installing Windows XP Pro SP2; and MS Office SP3)
run into a problem with my fax. Briefly, every time I now try to send a fax
the wizard opens and I receive the error message: "Fax Server Information
Cannot be Retrieved. The Wizard will now close." I've done quite a lot of
research on the net re. this issue and can see that many people are
experiencing a similar problem; but these seem to be related to a network
environment: I'm running a single standalone PC. I've checked my fax
configuration: AOK but it has the Microsoft Shared Fax Driver and in
"Properties" it says that "Sharing is not available for this type of
printer." Q. Why would I want to share it on a standalone PC? I send and
receive faxes intermittently; but this worked fine prior to installing SP2
and SP3. I would appreciate some guidance how I can cure this problem,
please. Oh, tech' details a OS: Windows XP Professional Service Pack 2
(build 2600); 2000 megahertz AMD Pentium 4; 1024 Megabytes Installed Memory;
Microsoft Shared Fax Driver on SHRFAX; CNXT V9x PCI Modem. Sorry to go on,
guys, but this is driving me insane!