I have CS5.5. Can't find this in my Applications folder. Please advise!
Do you mean Adobe Extension Manager CS5.5?
There is no application by that name installed in the Applications folder.
You should be able to locate it here
system drive:Applications:Utilities:Adobe Utilities CS5:ExtendScript Toolkit CS5
if this doesn't help then check this link ;- http://www.adobe.com/devnet/scripting/estk.edu.html
Utilities! Never would have thought to check there. Thank you!