"I have pumped and pumped, and when I open the rear bleeder with the pedel down i get nothing."
Are you getting any pedal at all on the rear lines? If not, I would open the rear bleeders (you can start with the left rear) and pump the pedal slowly down then let it up, repeat, repeat, repeat, until you get fluid at the bleeder. Don't worry about opening and closing the bleeder until you get some fluid coming out. Check the fluid level in the reservoir occasionally and keep it topped off.