Jvernon: thank you for the reply, after a lot of trouble shoot, I kept thinking that there was something odd. Everytime I went into the digital settings to try to run the autoprogram and add the digital channels I know are available because my neighbor gets them with an older version of a bravia than mine. I even decided to give it a shot with his antenna and No Luck. It's one of those high priced from radio shack, in which you can actually point or move the antenna by pressing some buttons in the front panel.
I kept getting frustrated, so after looking around in the internet every othe post pointed to using an amplified antenna, well guess what at least for me, for this exact TV model, that was not it!
It turns out, that first, in the SETUP settings menu, there you can chooose captions, label video inputs, etc.... but at the end there is a setting for Cable.
Here if it is on, the TV thinks it's getting the channels trough a cable provider, hence the word CABLE in the top right of the screen while you are triyng to run the add/auto program feature for the digital channels.
You need to switch this to OFF, and BINGO!!! even with the crappiest antenna available I was able to get my HD channels! if you get some but not all, then maybe the solution for that is to get a better antenna.
Hope this info helps other owners of this same TV.