Mars during the 2003 opposition

Excellent websites that deal specifically with observing Mars during the 2003 opposition

Timeline of Mars events for 2003 and Early 2004
Alachua Astronomy Club: Mars Opposition 2003
THE GREAT 2003 PERIHELIC APPARITION OF MARS - source: Mars Section of the Association of Lunar and Planetary Observers (A.L.P.O.)
Mars in 2003: Which Side Is Visible? Online application showing a map of Mars so that you can identify any bright and dark markings you see.
Your ASO Guide to Observing the Red Planet - an excellent, long and detailed guide