imaging a computer lab efficiency?

 I am getting ready to image a computer lab of 25 Windows XP Pro systems, and I am stuck on how to do efficiency.  I've installed Windows XP Pro SP3 on first system along with all of the additional programs (office, anti-virus, and windows updates, etc..), and I made the the disk image; but I am just a little lost on how to streamline the install process. 

After I image the systems, I need to:

• change the computer name to Workstation-01
• set the IP address to 192.168.1.101,
• set the subnet mask 255.255.255.0,
• set the default gateway to 192.168.1.1
• point to the DNS servers
• then join the active directory domain

and all of these steps have to be done to all of 25 of the computers.  I could just image all of the computers, then do all of these steps manually, but that's going to take some time.  Is there a way how I can set all of these variables dynamically, so that I don't have to all of these steps manually?