The answer to your question depends on your career goals. If you work (or plan to work) in a Microsoft shop, you should probably upgrade your MCSE for Windows 2000 or XP/.NET. If you wish to pursue more advanced Cisco credentials, I'd recommend CCDP and CCNP as your next stops. If you wanted to go the telephony route, Cisco's Telephony specialist programs might also be a good growth path for you as well.
This was first published in October 2002