Does anyone know when the 2002 feria is happening? I'm interested in going this year if the air fare and hostel rates aren't too insanely ideas (my October visit spoiled me as to the cost of rooms).

Normally 2 weeks after semana santa, which is relatively early this year. April 15-21st is the date given here.
http://www.sol.com/feria/index.htm

This link will get you what you want to know http://www.andalucia.com/festival/seville-feria.htm