Thanks Braden85
I read carefully all related material you suggested.
I still can't access photos and films i have in iTunes from the TV. But (?) i can choose and listen to all the music! Is music (sound) managed separately from Video and Photos?
On my TV I can see what I have in iTunes (photos, films and music) - EVERYTHING is right there in front of me and I can go from one to another (photos, music, films) but as soon as I choose a picture or a film, it goes into the rolling ball mode and i wait and wait and it never stops until, fed up, I go back in the Menu with my Apple Control. I verified that i had enabled Home Sharing with the correct Apple ID... and i did the same on the computer (i deactivated and reactivated for the sake of "waking" it up).
NOTE : until last Fall i was with a Cable company for my computer and TV while my phone was with Bell Phone Co. I never had any problems then. This is the first time I'ved tried to access my computer through AppleTV since then. Bell is my sole provider now for all services (phone, cell, TVs and Computers). I now use the Bell router.
The iMac (Mavericks) has the latest update and so does iTunes and the AppleTV gen 2.
I FIND IT ODD that i can get to my music in itunes but not the photos and films. Does that seem odd to you too? THANKS...