automate computer in active directory

Yes it is fairly simple if you use a boot image created with Windows or Ghost software. As you create your image you also create an answer script that you supply the OEM number, answer yes to install things, yes to time zones etc. One of the things you can do is join a domain and OU you select. We use Ghost to do ours and after a few tweaks it is vary easy, boot to a CD, or PIX, and the install starts.
This is about the same with Windows builds but we like Ghost because it works alot better with another copy of software we use called Shadow copy.