Help with sanguinololu electronics

i have a sanguinololu 1.3a with ATMEGA 1284P. bootloader and firmware already installed but i need help with drivers im getting a This device can not start (code 10). i have installed arduino files and put sanguino files in hardware folder. im wondering if its the baud rate but i dont know how to change it and cant find how to. im using windows 7.

been trying for days i just want to get the computer to recognize the board and then get some steppers moving after.

Windows7 should automatically install the drivers for the FTDI chip. If not, get them here. If it's recognized, you should see a COM port (eg COM3) in the device manager under ports.

Make sure the RESET jumper is on for programming. See the wiki page for more info.