What OS are you running today? It may not be compatible with Photoshop Elements 6.
I am currently running windows 7 starter
I am not aware of links for Photoshop Elements prior to Photoshop Elements 8. If you have the serial number of Elements 6 you can qualify for upgrade pricing for Photoshop Elements 11. You can find more details at http://www.adobe.com/products/photoshop-elements.html.