I am running Photoshop Elements 7. Is there a plug-in program for HDR imaging that is compatable with Elements 7? Or, is HDR software basically "stand-alone"? Does anyone have any suggestions for a hobbyist like me? What HDR software do you use? The write-ups I have read mention an alignment tool (or lack of one). Is the alignment tool a "make or break" issue? Are there detailed instructions somewhere on how to do this manually in Elements 7? Please advise.