module to work with csv files

[monnappa appaiah]

Hi all,

         can somebody please suggest me a module to work with csv
files.......majority of the function i use manually is sort, unique, pivot
table and also i shud be able to read the data and write to a different csv
file.....Kindly suggest me a module that i can use?....and i also use
windows machine.


Thanks,
Monnappa