@ultmate:
Millions of people would be in heaven but at the same time, those modified engineered cells will probably cost a fortune for they would have to be (I believe) made for each individual as no human reacts the same or has the same type of virus with the same level of mutation, right?
Sadly, that is the reality. There are two different main "types" (or strains as it were) of HIV. Type 1 is more common in gay men, which originated in North America. Type 2 on the other hand is more common to heterosexuals or inter-Venus drug users, which originated in Africa. The other down side is that even in a case where the same strain is passed from one person to another, it can mutate when it reaches the new host body, largely due to the way that it replicates its DNA in order to infuse with the CD4 cells. The problem there lies that such mutations can cause a resistance to certain treatments. Logically, this would suggest that it could also mutate to develop a resistance to this "treatment" as it were.
Don't get me wrong though, that being said, it is still possible to find a cure. The cure on the other hand due to the nature of the virus can be rather complicated all unto itself.