How I update Multi Tables In A Form

Hello Friend!.....

I wanna update tables in a forms.

I have two table
1. user table
   ( usertable has id , name, email, address)

2. game table
   (gametable has id, description, game_date, gametiming , user_id)

for edit .. I can display all two table data...
Wanna update data params by userID.

I do update two table data in a form.

How I do it ? Give Me A Hand!

phoesan