I know how to do basic read operations on excel spreadsheets using PERL. I have one question on it though. How do i programatically find out what is the last row having data in a particular column in the spreadsheet? (i would like to find out the last row containing data in a particualr column while a few rows in the middle could be empty; i.e. in column C, row 500 could be the last row containing some valid data but rows 100, 200, 300 and 400 could be blank with no data. In this case, how do i programatically find out using PERL that row 500 is the last row in column C having some data?)