Thats the exact version i have too.
Start Nero Burning Rom, close the "New Compilation" Window then click "Recorder" from the menu at the top, and select "Choose Recorder" from the list. If your burner shows up its supported, if not you will need to download and install an update.
I only ever use Nero and Alcohol120% but i've used most of the popular burning softwares. Alcohol120% is probably the best imo, but i like to use Nero to make MultiSession Discs and stuff.
What burning software did you get with the Plextor? You got a superb burner there btw.