Vista - Problems connecting to Mobile Device Center

I am new to this formum so I hope I am at the right place. I have vista business intalled on a Vaio notebook. I just got a HTC Touch PDA which is running windows Mobile 6.1. I installed the windows mobile device center but that application does not think it is connected to my Touch. However, when I connect the Touch via a USB cable, there is a connecction. I can see that the driver is installed correctly. I also get a message asking me for my credentials on both the Touch and on the Viao. I have talked to Sony which was not helpful (can't talk to Microsoft since I got the software via an OEM). I talked to Sprint which could not help (I got the touch from them). I have spent hours on this. I can connect the Touch to an XP computer using ActiveSync and everything works fine but I really want to use my Vaio since I travel a lot. The touch is also connected to my exchange serve and that part is working fine. I wan to use the Mobile Device Center to sync music and photos etc. Any ideas?

hi, Im having the same problem, if you solved it please tell what did you do
thanks

I'm having the same problem. Although it works if i connect through bluetooth.