The D0 Detector at TeV33

The physics that can be done with 30 fb$^{-1}$ of data at the Tevatron (TeV33) will significantly advance our understanding of particle physics. In this document we consider the potential of the DO detector for running with the TeV33 Collider. In that era, the instantaneous luminosity is expected to rise by a factor of two to five. We show that the DO detector will perform well with some relatively modest modifications.