Update undefined List Values in DB

Hi, I am creating a kind of Shopsystem right now. One of the Funktions is going to be the possibiliy that the page admin can set an customer status to 1 or 0 via an listing of all customers. My Problem is, that I have to change more than one value at a time due to the Listing, where all customers are listed in one big list. So I have to write multiple values in to the database as Update. I don't have a clue how to do this, the only thing i could do is to make the change possible via an extrapage per customer, but I'm not able to change all values at a time. Would be nice if somebody would give me a hint. Please excuse my english Sascha Braun