You would need a DC converter to change the AC current from the wall socket to the DC current the drill motor is going to need. Shouldn't be difficult at all, just make sure you find one with the proper voltage rating or you'll fry something. I believe radio shack has one that can be switched between different voltage outputs. As for the connection on the drill, there should only be a positive and negative terminal and it won't matter which one you connect to the pos or neg wires to. If you hook it up with the wrong polarity the motor will just run in reverse.
Build it, wheel it, break it, fix it, and repeat!!!!!!!
Everlast SuperCut 50 Plasma
Century 200 Mig welder
JD2 Model 32 Tube Bender
1995 Ranger 2wd regular cab - 5.0HO Conversion - Street Machine
1993 Ranger SuperCab - 466 BBF - Extreme offroad
1985 F250 Regular Cab 4x4 - 460 BBF - Towing Beast