How To Straighten hair with ONLY BLOW-DRIER AND BRUSH?

Ok, so I'm going to try to go with an emo hairstyle. Not fully, just a little bit. I won't have my straightener for about 2 months, so in the mean time, i want to figure out how to do it with just a brush and blowdrier. I don't have any straightening gell or anything... But i have mousse! lol :)