Automated Install

I will be upgrading hardware? most of the hardware will be win2000 workstations and two w2000 servers all from Dell. Dell usually has the software preinstalled but I would like to partition the hard drive to separate applications from data.. Does anyone know a simple way that I can automatically setup a workstation with all the applications and partitions the way I want and replicate all the other workstations through the network? Also is there an easy way to add additional applications to automatically be installed on the workstations since I will be adding more applications at a later date. Any Tutorials, tips or hints would be appreciated.