how can I check a checkbox with a database results

Hi, I looking for a script that will check or uncheck checkbox
I have a web base form that displays an database results
from a query, for every row there is a checkbox that the value
= the id field of a table that being queryed when a user checks a box the id value gets written into the database
so I know the checkbox was selected. Now when the user
selects the same form it does a database results to create
the form so how can I show that checkbox now checked I have the id value I just dont know how to check a box by a
script. Please help
Thanks
Dave

What's the server-side language you are using? You should do the checking/unchecking on the server-side and not client-side since you want the checkbox state to show on load of the page. Can you show some related codes?