It took some elbow grease but I got Xenserver installed on my newly acquired Mini. The hardest part was getting through the install since the NIC drivers are not supported by default. Did some poking around on the Citrix forums(Citrix bought up Xen a couple years ago) and found someone that downloaded and compiled the Nvidia drivers.
I'm not real familiar with Unix commands(used to tinker some back in the day but have forgotten most of it) so the hardest part was adding the custom driver module to the installer. Once I figured that out, it went relatively simple.
Xen is now installed and running locally. Unfortunately the custom NIC drivers didn't make it into the final install so I'm not sure where to go from this point. I've tried replacing the original driver module with the custom compiled one I found on the forums but it doesn't seem to like them very much.
Anyone else out there try this and get it to work?