HIV Vaccine to be tried in South Africa

This article comments on a new HIV vaccine that is to be tried out on 3000 HIV negative, sexually active men and women in South Africa (the country with most HIV infections in the world). The vaccine has been created in Seattle and will be tried in South Africa, but is not the final cure. It is a trial that, if it works, may lead to future advanced studies leading to the eradication of this much feared disease. It is especially a trial to see if this vaccine can help a heterosexual population, especially women.
Participants will be aged 18 to 35 and no pregnant women will participate. The vaccine does not contain active HIV genes so cannot commence the illness, but it is hoped that it can cause immunization to the illness. Some participants will receive the vaccine, others a dummy version and will be given advice on practicing safe sex. There is much hope for success in gaining more information about HIV through this vaccine in all sectors of the field.
I believe though this vaccine seems like a good idea, since there will not be any HIV positive exposure to it may not help as much as hoped. It seems that it is a very vague idea that could eventually work but needs much more put into it. But is a cure really available for HIV? And how much will this vaccine cost, if it works? Will it be tested on HIV positive subjects whether it works with the present subjects or not?