Connecting Problems Prusa i3 with Sanguinololu

Hi All,
I am new on the 3D Printer scene and have the following problems, (until now, that is...:-) )+

building a Prusa i3 with Sanguinololu with Cura I can not find the Sanguinololu board listed in Arduino. I think that's why I cannot connect my printer to my laptop. I know that Sanguino software should be installed onto Arduino, but I cannot fix it.
The machine is mechanically OK., the Sanguinololu board is soldered and seems OK.
When I connect to my laptop, (com6) it is detected, the led is on and the USB sound is also there, so it connects,
But, when in Arduino, going through the set-up mode, the program tries to connect, "connecting", but after a few second there is this message:
"Machine State: Closed."
When I press the reset button on the Sanguinololu board, the stepper motors are rattling a few seconds, so there is something going on.
That is how it is at the moment, who can help me out there???
How can I get my computer and Cura to recognise my printer and what am I doing wrong?
As I am more a mechanic than a computer specialist, plaese keep it simple and step by step.
Thanks.
Peter J.

You won't find the board listed in the Aurduino IDE as the board listings are for the microprocessor used. Figure out which processor is on your board (IIRC many use an ATmega 1284) and use a setting in the board section that uses the same processor. There should also be something in the Wiki so a search there would be a good idea.

Thank you for the info, I will try it and keep you informed. Greetz. Peter J.

The above is correct, you need to select 644p or 1284p in the Arduino IDE

Sadly though they also aren't in the standard IDE, You download them from [code.google.com]

Also use Arduino 1.0.4 newer versions aren’t support (yet)

To Vegasloki and Dust,
thanks for your info, now the machine runs and I am going to learn.

Hi I am also a newbi my problem is that altough I can connect with ardurino and upload sprinter firmware I cannot get pronterface to connect, the screen shows the word connecting and hangs there although if I remove the usb cable pronterface goes balistic with error messages too fast to read.
The port is comport 8 and I have tried all baurd rates from 9600 up to the maximum my configoration.h is set for 115200.
please help I am going crazy on google with no results.