Ok...

Have a XP home machine .....uses dialup.

"All of a sudden it just stopped working" user says

apply updates, scan for malware....uninstall\reinstall modem.

Create new dial up connection..."633 error... device is in use."

No PDA devices, no fax programs....

I use the diagnostics to query modem....works great

I can use hyper terminal to initiate the modem.....no errors.

Try new modem...same thing.....633 device is in use

Have searched google....posted on other sites....the only "cure"

is a full reinstall...that is a format reinstall...

Anyone have any ideas???

MLF