HIV/AIDS prevention messages catered to Anglo homosexual/bisexual men are not effective in teaching preventative behaviors to Hispanic homosexual/bisexual men. Hispanic sociocultural traits associated with homosexuality and bisexuality prevent the effectiveness of these messages. The Hispanic family is also extremely important in influencing behaviors. Successful HIV prevention messages geared toward Hispanic homosexual/bisexual men need to include the following: the importance of the Hispanic family, Hispanic cultural beliefs about homosexuality and bisexuality, and the cultural beliefs of "machismo" and fatalism. The high incidence of HIV infection among Hispanics suggests that serious steps must be taken in the construction of future HIV prevention messages. (Contains 12 references.) (Author/NKA)