you plan to do them yourself? i think highlights look easily very fake if you're not blonde. the general rule is never to go more than two value's lighter. if you don't want to look like an xmas tree i'd say try only one value lighter. it will be for sure less damaging. and i think those highlights in totally fantasque colors like yellowish or orange give a very "damaged look" to dark hair (i dunno how dark your hair is though). also, question your own color: is it cold (most likely) then keep the highlights cold as well(no yellow stuff that is).
personally i know people who like to put reddish ones in brown hair ... i think you have to fall on an absolutely dreadful stylist to get talked into that though.
that's purely my esthetical view on the matter, i never did any bleaching myself but if i would i'd try one of those thingies with which you're supposed to add highlights after having colored them from l'oreal or whatever.

A natural choice to allow your hair to remain in it's virgin state is to lighten your hair with lemon juice.  This is best done during the summer when you have time to sit in the warm sunlight and let the juice to it's work.  Lemon juice will dry your hair out some because of the acidity, but as long as you use a deep conditioner after your home-remedy lightening treatment, you should be okay.

Also, highlights from the sun/lemon juice combo tend to look very natural.

Just thought this info might help.  Good luck!

Hey Guys,
Thanks for the responses. No, I don't plan on doing it myself, that is why I am looking for a good salon to go to...Any Suggestions? Also, I am not looking to get a lot of highlights, just a few to lighten up my hair a bit...So it looks like maybe it was done by the sun ya know? Anyway, any more suggestions would be great! Peace