Help Save My Dog: Vets Bills Too Expensive

I got my puppy Rosie in the summer of 2008 - she was so lively and just all round a joyous little dog. Recently, she was not herself. Not wanting to eat or drink. Wouldn't stand up for long at all and just wanted to be left alone. No matter what we did she wouldn't do anything.  Worried, we took her to the vets and they told us she was suffering with a disease that was causing the toxins in a vein bypassing the liver to not be removed and that she needed surgery.  The bill is so expensive and my family have come to the conclusion that we cannot afford it. I am not giving up and hope and i'm asking  just please will anyone donate even a small amount before it's too late. I don't want to lose my best friend. Thank you so much.