Do you need a form at all?

All you're after is a yes or no from the user. Perhaps display the data in a table and add two links

<a href="delete.cgi?confirm=1">confirm</a>
<a href="delete.cgi?confirm=0">cancel</a>
[download]

Have the script take care of if and what is to be deleted. You really need to heed quester's note of caution about authorisation though.