Update form question

Hi folks-

I am in the learning stages of working with databases. Anyway, I am at the point where I have created the database and am looking to create teh function in which the user can choose a listing from the database to update using a dropdown menu. I have created the page that has the dropdown menu with the listings (for my purpose they are job postings) and that part functions.

What I am confused on is how to pass on the chosen listings to the update form page which will then list the job posting and all other info for that record. (i.e. the position, description and requirements).
My DSN is named Jobpost and my database is jobs. My primary key is JobID

Here's the code I have set up on the dropdown menu page which is functioning correctly:

<cfquery name="JobPost"
datasource="JobPost">
SELECT * FROM jobs
</cfquery>
<p class="Photos">Please select an option below:</p>
<form action="Updateselectedjob.cfm" method="post">
<table width="310" border="1">
<tr>
<td width="120" class="Copy">Job Position: </td>
<td colspan="2"><select name="Postion" id="Postion" class="formcopy">
<option value="Jobs">Choose One</option>
<cfoutput query="JobPost">
<option value="#JobID#">#Position#</option>
</cfoutput>
</select></td>
</tr>
<tr>
<td width="62"><input type="submit" id="ModifyPosting" value="Edit Posting"></td>

On that update page, here I believe is my area that needs to be resolved. I have the following code set up:

<cfquery name= "JobPost"
datasource="JobPost">
SELECT * FROM jobs WHERE JobID = #URL.JobID#
</cfquery>

How do I get the dropdown menu page to pass on the jobID info to the update page through the URL?

Thanks for any help you can provide!!

Dave