Windows Vista Error 633 on dial up connection

I have installed a Conexant D850 56K modem in a Dell Inspiron running VISTA 64bit Home Premium. The modem works in an XP 32bit machine.

Driver installed OK and there are no apparent conflicts in Device Manager (no !'s anywhere)

I am getting an error 633 when I try to connect. Telling me that it cannot open the port. It indicates that it is running on Comm 3 but I con't see where to change this to another comm port.

Any help is welcomed and appreciated. TAI

 

Thanks Tony... I did that and didn't make any difference. Same error.

No conflicts according to device manager

 

is the driver you installed for Vista 64

 

yes, Vista 64 was listed in the programs on the splash install screen

 

I take it that it is a PCI internal modem, if so have you tried a different PCI slot.
Can you lay a hand on a external modem, my personal experience in the past was always in favor for a external modem.

 

yes thanks, we tried the other PCI slot.

I am thinking that I might have to break down and call Dell to buy one of their modems then it can become their problem