Inventor 2010 no longer uses ANSYS. Not sure what you mean by, "...not the Pro Menu"?
Are you using Ribbon interface or Classic?
FEA should be under Environments.
I has some problems where it wouldn't show up for me and I still had 2009 installed. I had to to a Clean Uninstall of 2009 and 2010 per Autodesk instructions (including editing of Registry) to get 2010 Pro working correctly. (I was also missing Inventor Studio)