No.
Some are misconstruing the phrase "change their sexual behavior" in the sentence "Resources should be directed toward those institutions which provide assistance to those seeking to change their sexual behavior" found on his 2000 website.
The true meaning can be ascertained from Pence's 2 February 2008 speech at Ball State University, Muncie, IN.
...
Currently within PEPFAR [President's Emergency Plan for AIDS Relief], these pivotal provisions exist in forms such as the ABC Model, which stands for Abstinence, Be faithful, and Consistent and Correct Condom use. It is absolutely essential that we preserve these prevention methods that focus on behavioral change. Working with faith-based and non-governmental organizations on the local level, in particular through the ABC Model, has produced undeniable results.
....
It is not enough to send billions of dollars to Africa without sending values-based techniques that work to fight the spread of HIV/AIDS by changing behavior.
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Last week when the President called for continued support for this very important initiative in his final State of the Union address, he insisted that Congress must "maintain the principles that have changed behavior and made this program successful." The current draft of this reauthorization is no longer the program envisioned by the President and embraced by Congress. Under the new bill, PEPFAR would no longer be a program focused solely on prevention and treatment of HIV/AIDS. Instead, it would be converted to a program that, with increased funding, could take lives through abortion rather than save lives through prevention and medication. PEPFAR is a successful program that is under attack.
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(emphasis added)
Mike Pence used similar terminology in a 24 July 2008 press release:
...We cannot send billions of dollars to Africa without sending values-based safeguards and techniques that work to fight the spread of HIV/AIDS by changing behavior.
Within the current version the Global AIDS bill that the Senate recently passed, these pivotal provisions exist in the form of a requirement to provide balanced funding for prevention activities for sexual transmission of HIV/AIDS,'and to ensure that abstinence and faithfulness programs are implemented and funded in a meaningful and equitable way.' This is enforced by requiring the Global AIDS Coordinator to report to the appropriate Congressional committee if funding for abstinence, delay of sexual debut, monogamy, or fidelity programs drops bellow [sic] 50 percent of the total sexual prevention program funding.
It was essential that we preserve these prevention methods that focus on behavioral change, and that we work with faith-based and non-governmental organizations at the local level, in particular through the ABC Model, which has produced undeniable results. ...
(emphasis added)
For more information on the ABC model see Abstinence, be faithful, use a condom