A question about the Xbee explorer

Hi Guys,

I just received my Xbee explorer from SparckFun. The problem is that when i connect it to the computer, using the USB cable, the computer cannot see/know its connected. I don't know if its broken or i'm doing something wrong.

I have to mention that the power LED is working (RED). However, the TX and RX only flash for two or three times at the beginning and then stop. Is that normal?

And do I have to program it/modify it in order to work?
Thanks for your help

Make sure the USB connector is securely connected to both ends. It can be half connected which provides power but no signal connection and I have had it happen several times.