We have a mirrored system with two Dell Poweredge T-100's both with APC SX 900 Battery Backups.

Although I would have rather had MS Server 2008, the IT guys were familiar with MS 2003 (Std, with SP 2), so that's what we got, since I know (knew) nothing about administering a network.

From the "properties" info:

Intel (R) Xeon (R) CPU
E3110 @ 3.00 GHz
3.00 GHz 3.99 GB RAM

Physical Address Extension

Without a doubt, you can set yourself up for less money than we did, but we were just starting our private practice and wanted the technology to almost disappear because it worked so well.

And btw, one of the best (BEST) things about Amazing Charts is that it did not require a change to the way my husband practiced medicine (something he's very, very good at) in order to document (a necessary evil) with the computer (something he is not so comfortable with).

Most EMRs come between the doctor and the patient, imho. Rather than supporting the doctor's documentation and lessening the possibility of error (automatic drug interaction checking, for example); the average EMR requires too much adaptation on the part of the medical staff.

I hope this helps!