Changing out spring for the forks and shock is a pretty easy task that most mechanically skilled people should be able to handle.
Getting the forks and shock revalved is something that should probably be left up to a professional. Racetech sells those do it yourself Goldvalve kits but they are crap.
Send you forks and shock to Lindeman or Thermosman and they will revalve for you for about $600 each end.
http://www.le-suspension.com/
http://www.thermosman.com/
Next step up the foodchain would be to ditch your stock shock for something like a Penske or Ohlins which will run you anywhere from about $700-1500, and also replacing your fork internals for a set of Traxxion AK20 or Ohlins cartrdges, that will run you from about $1000-1500