Just to take Stim's good points to a little more level of detail:

When you say "chords", do you mean chord names placed underneath a melody line scored in standard musical notation? Or do you mean piano chords also written in standard notation? Or both?

Also, does your request mean that you need someone to work out the chords for you - or do you know the chords and just need them formally notating? There's a whole big difference in these things - the first option would take far more work.

What software packages have you tried? I use Harmony Assistant, which allows music notation, tablature and chords to be combined and printed/exported.