You can find the serial number of the remote on it's backside, and is being reffered at as S/N ....

The serial number of your sensor can be retrieved by connecting the sensor to the remote.
In CDR you click on the "system" tab in the menu.
Then click on "sensor" and finally on "sensor info".
Here you can find the serialnumber, sensor size and the calibration date of the sensor.
When you click on "all sensors" you'll see all the sensors that where connected to your computer.

You can retrieve the software version by clicking in the software on help, and then on info CDR.
The software version is on the third line.