I have a good idea. One your boss might not like initially, but he'll be a believer when he sees this option's amazingness.
Ditch Ghost. Save the money. Install Ubuntu (open source, free of cost) on your choice of PC that will act as the imaging server. And overtop of Ubuntu, install FOG (also open source, free of cost).
FOG :: A Computer Cloning Solution - Home
I prefer it far over Ghost. I forget what version of Ghost I used, but I had used it relatively heavily when I was interning in Jan-April 2008 so I'm pretty familiar with it. I used FOG to image 1,700 computers in a 10 week period this summer. I imaged 55 netbooks last night and I imaged about 10 computers so far today at my desk.
Beginning with version 0.27, they supported Windows 7. They cranked out version 0.28 about 3 weeks ago. I tested imaging Windows 7 on a Dell Optiplex 740, and it worked just fine. In fact, it worked better than Vista - but that wasn't surprising to me.
My opinion of Clonezilla:
Clonezilla LiveCD - FANTASTIC for single user backups. I use it at least several times a week here at work. I also use it at home to back up my personal computer. It's a great way to pop in a simple LiveCD and crank out a backup onto an external hard drive.
Clonezilla Server - Absolute headache. I tried this route prior to trying out FOG, and I had a rough time getting the imaging process to work. Once I did get it to work, the MBR on my image was crashed - rendering my images useless.
Since it seems like you need a server of some sort, I recommend you try FOG. If you need additional help setting it up I'd be glad to help best I can as well. If you need single backups of just 1 PC to have handy in the event of a crash, you really can't beat Clonezilla LiveCD since it does not require a server to run.
I won't lie, FOG does require a little bit of terminal work to install - but it's very easy. The most you have to do with Ubuntu is install it, fully update the OS, and assign yourself a static IP. FOG does the rest in its web based interface through Firefox.