When dealing with boosting immune system to help suppress HPV, besides the vaccine, what vitamins can I take that will be most beneficial.?

None but. If there is one vitamin which boosts the skin's defense system, it would be vitamin D3 which acts on the skin's keratinocytes to produce defense substances against infection. HPV will need far more potent defensive action than the vitamin can provide. See your GYN before the problem spread further or to others. Besides HPV has been linked to cervical cancer.