BRAKE PROBLEM--HELP PLEASE!!

I just put new calipers and rotors and pads on my rear wheels. They are stock replacements, just the normal stuff. When we took the old ones off, I did not plug up the brake line to prevent air from getting in. (I'll remember to read first before dismantling from now on) Now I can't get my brakes to bleed. To make matters worse, when I disconnected the e-brake cables from the calipers, I think something went wrong. I released one side with the e-brake on and then realized I should probably put it down. So I did, and took the other side off. When I hooked up my e-brake cables (I literally held that spring contraption with a prybar as far as it would go while my brother pulled the cable into its slot) I went to test it by pulling it up inside the car and it won't budge. It is stuck down. Now my brakes won't bleed, my e-brake won't budge, and my car is stuck on jack-stands until I figure this out. Please someone point me in the right direction. I am novice at this stuff and trying to save as much money as I can.(not very good for a sports car owner) Any tips on how to do this at home would be the best. I really didn't think this would be too hard, but its proving to be harder than swaping my clutch. Thanks in advance! Tswen.

Thanks guys. I do appreciate the help. However, I have been puming the brake and trying to bleed it but it seems like nothing happens. My brake pedal is aloose as my clutch pedal. no pressure builds up. My old caliper's piston was stuck out. I tried to force it out with air, wd-40, and I tried to compress it with a c-clamp, but nothing worked. I got a relacement for both sides since the book recommened it if one breaks.
No, I did not do anything to the calipers that I received em, I mounted them on the brackets and put the pads in, then attached it to the rotor and tightened it on. Then I pushed a pry bar as hard as I could into that little spring thing and my brother pulled the e-brake cable into the catch. I've heard there is a circular looking thing that the e-brake cable wraps up around and that you can stick something in it to get some extra tension. Could that be the problem with my ebrake? If so, where the hell is it? I'm looking under my car and I don't see it anywhere like it looks in my haynes. (go figure)