How to start up MacBook without a keyboard?

I have a macbook core duo,it had logic board issues,i opened the case to replace the logic board with one i bought on ebay,and broke the keyboard cable in the process,i have tried to power it on with my imac keyboard (G3) but the macbook won't respond to the power button. are there any pins on the logic board or anyway to make this thing turn on? i am going to order a new keyboard soon,but i spent all my money on the logic board,so i need to save up. I use this for school,and need to get some homework off of it. i have a usb keyboard and mouse,which i used frequently before the logic board died,so i know they will work,i just need a way to turn this on. i will only need to do this once,because i will just put it to sleep and wake it up through the display/lid until i get the keyboard. If anyone knows how to turn it on,please respond. i saw a little black thing with 3 pins coming out of it that says power btn by it,if that will be helpful,i don't know...
ANYONE THAT KNOWS ANYONE WHO WORKS AT AN APPLE STORE,PLEASE ASK THEM.

Recent MacBook spare part searches: start macbook without keyboard, boot macbook without keyboard, turn on macbook without keyboard, turn on macbook without power button, how to start macbook without keyboard, macbook a1342 logic board, a1278 power pins, a1342 power short, macbook pin keyboard, a1342 power on from logic board, on-board startup jumper pads macbook pro 17, macbook a1342 power pads, macbook air power without button motherboard, jumpstart macbook, startup mac without keyboard, macbook a1342 power button, macbook a1342 power button logic board, how to turn on macbook white without keyboard, how to turn on a macbook without switch, sleep switch on macbook a1342, jumpstart macbook pro 13, macbook startup from motherboard, power up macbook without power button, on-board startup jumper pads, jumpstart macbook air, macbook white jumper, macbook white dont power on keyborad, macbook unibody power button pins, macbook unibody logic jump, macbook a1181 pinout, macbook unibody jumpstarting, macbook a1342 booting usb, jump start mbp 13, jump start macbook usb, macbook unibody 13 power jumper, macbook a1342 keyboard pinout, macbook pro unibody keyboard pinout, power button macbook 13, wikipedia magsafe power board macbook a1342, a1342 jumpstart, A1278 Power Switch, a1278 power pinout, power pads on unibody white macbook, MacBook Pro a1278 Power pads, a1181 a1278 a1342 harddrive, a1278 jump start, a1278 power pads, a1342 macbook power button, a1342 magsafe board, a1181 powering on witout keyboard, 2009 15 unibody logic board jump start, start macbook pro without keyboard, will a magsafe board from a1181 work on a a1342, a1342 power pads, macbook pro power board pins, macbook unibody power jump, macbook powerbutton pinout, macbook pro power pads boot without keyboard, macbook pro 13 keyboard pinout, mackbock 13 white start without keyboard, macbook will not turn on shorting power pads, macbook pro 13 jumper pins, macbook white unibody jumpstart, macbook pro 13 unibody power on pins, macbook pro power button, macbook proi 2008 power jumper, macbook start without keyboard, macbook pro on-board startup jumper pads, macbook pro boot power pads a1278, macbook pro 13 power jump, macbook pro a1278 logic board power pads, macbook unibody a1278 power button logic board, macbook unibody a1278 short pins to turn on, macbook pro power on pads logic board, magsafe board a1342, on-board startup jumper pads macbook pro 2008, short power pads on mac, a1342 power jumper, staring macbook without keyboard, start macbook pro 13 unibody without keyboard, start macbook pro from logic board pins, start up macbook air without power button connector, switch on keyboard macbook, turn on macbook 13 without keyboard, turn on macbook pro 13 without keyboard logic board, turn on macbook pro jump power button, turning on macbook a1342 short pins, turning on macbook pro unibody on without power button, unibody keyboard connector pinout, unibody turn on without keyboard, white macbook power button jumper, white macbook power button pinout, white macbook power up pineout, short power button macbook pro 13, short out pins to start macbook a1278, short start a1278, pin power macbook motherboard, pinout trackpad macbook, pins a1342 motherboard startup, power button on macbook a1181 logic board not working