Subject: mitsubishi lancer 2002
Question:

2002,mistubishi Lancer ES,automatic,2.0 How do I replace the shift solenoid?

Answer: Pavel,
Your best bet would be to visit your local dealership and order a factory service manual. I don't answer "how do I do" question on this site for such repairs because they can get too involved and I wouldn't want to miss a step. Sorry I couldn't be more help.
Good luck!