Redhat Linux ES 3.0

  I am interested in purchasing a new workstation computer.   I am looking for
a computer that will run Windows XP Pro & Red Hat Linux ES Version 3 in dual boot mode. 
I am very new to Red Hat Linux. My background is mainly MS Windows.  I have
looked at the Power Edge server class machines.  They are good, but I have
issues with the size/chasis of the server class computer. 
Really need same computing power, but in a desktop tower type computer.
I have been reviewing the Precision Workstation 360 - 650.  I see that I could
use Red Hat Enterprise Linux WS.  Could I use Linux ES version 3 OS on
Precision Workstation line between 360 - 650 without any installation
issues?

In a nutshell I am not sure which Dell workstation line will work with in Dual Boot OS Capability (MS Windows/Linux ES 3.0).
Can anyone out there advise me on the best workstation line & best configuration to include
Video graphics drivers before I purchase.

Thanks