Up to date software implementation help:

http://www.sysworkers.com/free-ebay-software-help.asp

beListings is a freeware open source, distributed under GPL license.

Company: Sysworkers LLC Miami, FL
Website: http://www.sysworkers.com

Original author: Ricardo D. Lerch
Author email: ricardo@lerch.com.ar

Links to eBay and CommissionJunction

beListings free eBay Software License

Copyright (c) 2006 Sysworkers LLC. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the disclaimer in the documentation and/or other materials provided with the distribution.

3. The end-user documentation included with the redistribution, if any, must include the following acknowledgment:
"This product includes Free beListings developed by Sysworkers LLC.
Distributed By http://www.sysworkers.com/"

4. This is not a mandatory condition, but we ask you to place a link in your website where you are using beListings software. 
Use the following code to paste in your website:

Powered by: <a title="Free eBay Software" href="http://www.sysworkers.com/free-ebay-software.asp">beListings free eBay Software</a>

DISCLAMER
THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Sysworkers LLC OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

This software consists of voluntary contributions made by many individuals on behalf of Sysworkers LLC.
Distributed under license of Sysworkers LLC Miami, FL. USA.