Make sure nothing's connected to TX or RX whenever you try to flash it, or that whatever is connected to them isn't powered.

Strange, it should just let you choose whatever com port the Nano is connected to. Yes, it's a problem of the USB-serial driver. I think rather than the processor's brand, what's more important is your OS and if it's 32 or 64 bits. You should check that.

OK, I have some things talking.  I cannot flash the Arduino though.  I get a message saying that I 'may be using the incorrect COM port, did I configure it correctly?'  In the menu system, the option for com ports is greyed out.

I figured the USB drive may be incorrectly or not installed.  I got the driver files out the arduino distribution and tried to reinstall them.  Which the computer tells me it did correctly.  But I still get the same issue.  USB driver install file is called dpinst-amd64.exe.  Maybe this is only designed for an AMD processor? I am on an i3. Though I am not sure how this would make a difference...  But I do not see a file that relates specifically to i3 or even win7.

I suppose the official arduino IDE should be fine:

http://arduino.cc/en/Main/Software

Select the Nano board in the top menu and just flash it!

We overlapped xD

http://www.arduino.cc/

should get you started.

check the download section for software.

Hey team,

I am building an Arduinoboy using an arduino Nano.  I ham having issues working out how to flash the arduino with Trash80's code.  I have flickering LED on the arduino when I plug it into the USB pro on my computer, so I know it's getting power.  I jsut don't know what software etc I should be using.  Can someone point me in the right direction?

Thanks a lot!