When will we have an effective theutic vaccine for hiv? President Clinton said 2007, but?

2007 is here and nothing. I recently read that scientists have found hiv's achilles heel, the crucial moment when it starts to bind with a healthy cell, it starts as a cautious handshake then a full on bear hug..they want to strike at the cautious handshake part. Then I read about using stem cells to ward off hiv. I hear all these different techniques and they say "this is it", but I never find someone saying with absolute certainty one can live a full life with hiv, if what they found is "it" then why can't they say that. Basically, I'm only asking if anyone has any idea when a vaccine or any other technique to keep hiv under control for life will be available? thank you.