Now was that so hard?
Anyway, what you have to do is open the file:
C:\Program Files\HTC\aheditor\terrains\shpfilter.txt
look for 109F4 & 109G2 & 109G6 near the bottom then add // in front of them. Now restart the TE and they will show in the list.
PS. If you want EVERY object to show, just delete the file 'shpfilter.txt'
