hmmm.. traffic node if you have the traffic node upgrade software, there is a help file within the folder and it will really help you.. just play with it.. especially routing. I did 2 years ago and I was able to handle it.
as finn said you can find upgrading steps in help files(in htm format). main rule if a new magazine u must put a only npu and upgrade baseline than insert cards one by one.(when you inserting cards, your computer must be connected to npu and ftp server running)