Steph, just a few things that could help bring up your supply, if not help the quality of the milk.
Try a pint of guiness, honestly this will helpbring your milk to nice and creamy - I know that there are plenty of moms here who do not believe in any alchohol during nursing, but it REALLY REALLY helps with the quality of th esupply.
Also, if you are in the states, try mothers milk tea- you cna get it at any healthfood store, and if you want, I can mail you a box (I have a box in my cabinet that I am not using) just let me know where you live, and I can let you know shipping... If yo uare not in the states, I can also mail it to you, just costs would be more.
Also, for brining up your supply - make sure you are DRINKING LOTS OF WATER..... this is key - the more you drink, the more fluids are in your sytem.