Windows Imaging Solution?

So I've been working on a solid solution for managing my client images using Ghost Solution Suite 2.5.  The results have been decent so far, but far from where I would like it to be.

Goals:

* Capture desktop images on a weekly basis (only 15 desktops in environment)
* Support XP SP3 and Windows 7 Professional clients
* Fully automated
* Fastest restore possible

This is a trading environment, where limited downtime is key to success.  So I'm wondering what others are using out there to get the job done.

I've looked into WDS, which looks pretty sweet, but from what I can ascertain it doesn't support XP clients.

What else is out there?  Is Ghost the best solution for what I'm trying to do?

Right now I have the client installed locally on each XP machine and I can initiate task remotely and capture the image.  However after the virtual image boots and pushes the image up to the server it drops to a command prompt and sits there without rebooting.  Leaving the task of manually walking over to each machine to reboot.

Your thoughts?

Thanks,
blunted1