help please

please can any one help me am new to this ve just got my uno r3 to day its the new one small smd chip on it insted of the long atmeg382 above chip itsays DCcele under that says DCcdulnouno now i downloaded this sofwhear and pluged it in useing usb got green lighte led and red one on tryed to put a heart beat program on it and it sayas some thing about com port not reconised went into devicemanger on my controll pannel clickt browes lookt at the driver folder but can fined the uno info file its after can any one help me to get this com port it wants many thnaks from stan

Does this help?

http://arduino.cc/en/Guide/Howto

It tells you how to install the drivers.

it help me a lot many thanks