Convert SUMIFS formula for 2003

Could anyone help me convert the following formula so that it would work in Excel 2003:

=SUMIFS($BB$4:$BB$500,$E$4:$E$500,"Abbeywood First",$L$4:$L$500,"Autumn")

I could play around with it for hours and get nowhere, so I'll just turn to the experts.

Many thanks,

Steve