Honestly, unless you suffer from adhesions which prevent retraction of the hood that have not responded to other treatments or a completely "submerged" clitoris, I would advise you to not have this done. Removal of the clitoral hood is one of the more common forms of "female circumcision" practiced in less civilized parts of the world (with hood removal and Sunna being more common than infibulation and/or exision).
Removal of the clitoral hood is, in effect, the removal of a vital protective body part that plays an important role in sexual arousal. The clitoral hood is designed to move along the clitoral shaft, moving up and down with sexual intercourse. Remove the hood, you lose that stimulation, reducing pleasure during intercourse. In addition, many women who've willingly undergone this procedure initially complain of hyper sensitivity, rendering them non-orgasmic because any direct stimulation is painful. Once the exposed clit "toughens up," orgasm remains more difficult to attain for some women because of the now decreased sensitivity and thickened skin of the clit.
Again, if you cannot retract the hood, or if your clitoris is submerged, then I would advise talking to a gyn with experience in this area (though certainly not one who "specializes" in surgical removal of the clitoral hood--people who "specialize" are often people who try to sell things we don't need). You could ask about "splitting" of the hood, which would make access to the clit easier, while preserving the protective function of the hood.
Good luck in whatever you choose.
Kallie