So this is my first arduino project and I am trying to run code in my mac terminal that begins with import serial and import gtk. I have downloaded gtk2 and a pyserial from online and place them on my desktop. Then I switch my terminal over to my desktop and try to run a program starting with "import serial" and "import gtk". When I type "python RemoteControl.py" which is the name of the r, I get an error saying "ImportError: No module named serial". Basically, I am not sure if I need to download something else, if I am entering the code wrong or what is going on. I am basically trying to use the serial and gtk libraries but am having little success. Additionally, the purpose of this code is to create a user interface that will run on the computer and allow me to control the arduino and ultimately another device with my computer using a serial connection. What program do I need to execute the code in to do this? Any help would be appreciated, thanks!