sql update from dynamic information

ok, lets say I have a page that pulls information, loops through the
query forming table rows. Each row has a checkbox, an input field,
and some info. from the query. Lets say there is 5 rows of this
information and then a submit button. The user clicks which
checkboxes they want to make an update to (to that record) and then
hit submit. How do I check to see which boxes are checked and then
loop through an cfquery update to update the information in the
database? Does this make sense? I know how to get the info and update
it...just not how to loop through all the records that the user has
checked to update.

Thanks!