I bought them even though they were too long. I needed about 2 inches hemmed. "What not to Wear" advises to buy off the rack to fit your waist and then tailor them where needed. But there's no way I'm going to pay for my $19 jeans (great sale at JC Penny) to be tailored.
I googled "how to hem jeans" and found a few tutorials. This one is my favorite, by Cardigan Empire.
" You see....I have this blog.... and I just hemmed these pants and I can't post without a picture...."