Looking for conditional averaging or "Averageifs" function for '02
 

I have Office '02 at my workplace and am tryin to do some conditional
averaging (i.e. calculate averages of numbers in column C if same row in
column B is 'Bravo'), I know in '07 there is an averageifs function, any idea
of something similar for '02 or '03 (home computer)?
Thanks!