copied indesign from iMac to flash drive then copied it to mac powerbook desktop but indesign document marked "exec" and says "there is no application to open the document .... idd?
That will not work!
You cannot copy or migrate Adobe applications from computer to computer. There are a whole host of files in different locations which have to be installed, and copying will not do it.
In fact, you'll now have to use the Adobe Cleaner tool to remove the mess you created. You can get to it here: