Use all Honda fluids except for the engine oil, and maybe the brake fluid. For the engine oil, I'd use a fully synthetic formula.
I haven't heard about many issues with the automatic transmission on the 7th gen Accords, especially after the MMC. However, I'd make it a habit to change the transmission oil every third oil change (or every 9,000 to 10,000 miles, and do it twice... remember, drain and refil, don't flush a Honda ATM!) If you do it yourself, it's dirt cheap (easy, too) and it helps with your cars longevity.
Just follow the manual and if you need help, there are quite a few user forums for help. vtec.net, v6performance.net, driveaccord.net, etc.
Happy driving to your son!
