> But I'm not sure if increasing estrogen would up the sex drive in women.
It doesn't. Raising a woman's testosterone level does though, just as it does in men. Of course it also has some unpleasant side effects like increasing facial hair, and some possibly not-so-unpleasant side effects like increasing muscle mass. Many women who are unsatisfied with their sex lives are treated with testosterone with good results.
-- Lee Daniel Crocker <lee@piclab.com> <http://www.piclab.com/lcrocker.html> "All inventions or works of authorship original to me, herein and past, are placed irrevocably in the public domain, and may be used or modified for any purpose, without permission, attribution, or notification."--LDC