The way we do it in our company is Acronis Snap Deploy 2.0 with Universal Deploy. Yes it will cost a little dough, but it will work. In fact, if you need to do hundreds of machines like you are doing, that need the same image, get every machine ready with the client. Hit deploy on the server and the server will multicast the data (meaning the same data will be sent to the machines waiting at the same time) so you only have to send the image once and all machines listening have the image. Unicast makes it so you have to image one system by itself over the network. Multicast is your way to go as you save time and bandwidth inside the company by it sending the image once to all clients vs. unicast only sending it to one machine. Universal deploy changes the SID's and UID's that windows has. It can also install drivers, etc. All you need to do is bring a freshly formatted system up, install whatever software/customizations you need to it. Image that one computer, then deploy on the rest.
