Yes
You can use the /connect command in the short cut to bypass the password screen. Then all you need to do is put that short cut in your start-up folder in the start menu.
That should mean it will be run RadarBox when your machine restarts and login automatically.
Right click on your RadarBox shortcut go to properties. In the target box add "/ connect" after the quotes without any quotes.
So depending on where your software is installed it will look like
"C:\AirNav Systems\RadarBox\ANRB.EXE" / connect
Alan