Im not sure if what you said also aplies for my problem: I have Windows XP.
Yesterday I connected my SGS2 to my mother's laptop which runs Windows 7 and all, worked pretty good.
Today, I have been trying for about 5 hours to connect my phone to my PC. It runs Windows XP. I am now at the point that I start Kies (tried Dutch, then UK, now US version of Kies) and I plug in phone.
It says 'connecting' and doesn't stop. I have waited for 10 minutes and nothing. The device is in 'MTF mode' or something. On my moms Windows 7 laptop the computer starting doing things (installing drivers or something?) and that name quickly changed a few times, after which it worked with Kies. On my PC, nothing.
I have installed drivers trough Kies itself. I have searched till the edge of internetz.
I give up. Somebody please help me.
PS: I always have problems like this. Thats why I dont touch my PC so often. Everything that can be done in 20 minutes goes wrong with me and it takes me hours. Computers hate me.
Edit: I tried what is told here and it doesn't work -_-
Edit 2:... Im giving up. After trying all day (Sunday is boring anyway) to update my phone via Kies I give up. I will remain forever at the same software. If Kies ever decides to stop ignoring my phone, he can call me.