Dialup internet not working on Vista x64

[lopdog]

I´m trying to create a Dialup connection on my Laptop running Vista Ultimate x64. The modem is a Motorola SM56. I´ve installed the driver that came with the computer, and it shows up in Device manager without problems. But when I try to connect with DialUp, it tells me that no modem is found.
It all worked perfectly a few days ago, with Vista Ultimate x86, but after I changed to x64 this happened.
Maybe it´s not related, but also I can´t activate Automatic Network Detection, when I click activate it just doesn´t change.

 

[Route44]

It sounds like driver issues. I would go to Motorola's website and see if they have updated drivers that will work with your modem and x64.

 

[DelJo63]

Vista is know for missing / incompatible drivers

 

[lopdog]

Following a tip from a friend I tried to enter "Telephone and Modem" option in Control Panel, but I got an error message saying that there may be a problem with the Telephone Service. I checked the services, and the service is running and set to manual. But still my modem is not working.

 

[Route44]

Have tou tried to uninstall and reinstall the drivers?

 

[lopdog]

Yes, I´ve done it twice. Same problem. Does anyone know why I can´t access the phone and modem option in the control panel?
I found similar symptoms in the Windows KB (http://support.microsoft.com/default.aspx?scid=kb;en-us;329441), but this applies to XP and not Vista.
Could I try the suggested solution anyway?