Lightroom 3.6 and greyed out modules
I don't think LR sees Elements as "Photoshop"
You can only have one other external editor other than photoshop.
AFAIK You would need to specify Elements specidied as that external editor.
If yo do not have "Photoshop CSx" the edit in section for Photoshop will remain greyed out.
|Chicago Alley by tko|
from Down the alleyway
|Callan-5680 by vbuhay|
from What Child's Dream May Come
|Widget by Wilfried HKG|
|Oxbow Bend by stickpointed|
from Landscape - Colour #2