Unfortunatly PSE4 dosnt have the tools. I had to bring it into CMYK and LAB color spaces and work in layers to get this cleaned up....only available in the full version of Photoshop. :-(

It was quick....only took about 10 min.

My reccomendations are to get some sort of White balance tool and learn how to use spot meter mode to meter off somthing like the green leaves in manual mode....this will alleviate any color casts and get the contrast right. You will be supprised how many pp issues are cured by getting the exposure and WB correct from the get-go. It the quickest killer of pop of the colors to have either incorrect.

Roman