Condensing photos to post-HELP!

  1. hi guys! i want to post pictures but i can't figure out how to condense the files. can anyone help me? many thanks!!!
  2. What photo editing software do you use?

    If you don't have any, there are 2 free ones you can download;
    picasa or
  3. i use picassa. does that help? i tried and tried!
  4. Do you know how to use their re-size tool?
    Or is there a "Compress Photos" option?