I needed the Samsung Tab drivers for Win 7 because when I attached the USB cable it would not properly install. After installing Kies it kept trying to connect to the tab with no luck. I gave up and removed Kies but, fortunately, the drivers remain.
This is why the ipad is so successful. Samsung needs to make it easy with no tinkering, downloading drivers, etc. It takes us geeks to figure it out, but 99% of the population will just give up and return it. Imagine how much higher sales would be if Samsung nailed this.