Yes and yes. Actually when you delete the partition that windows is installed on, the other junk will go. As for the drivers, I believe the drivers that windows already has for most of the hardware is already better than what Dell has. I made the mistake of using the Dell drivers the first time I installed windows 7, and I had problems right from the getgo. I just reinstalled windows 7 three days ago, and it is even more stable than the first time around. All I had to install was 3 drivers. And one was the touchpad. It already had the drivers installed, but no interface so I could turn the sensitivity down.
But that will do it.