Can't complete the Training mission in Driver for the PC, but want to play the game?
Easy.

Make a copy of the file DRIVER\DATA\MLADDER.DML first!

Edit the DRIVER\DATA\MLADDER.DML file in Notepad or a similar text editor.
Remove the two lines:

INTERVIEW
QUITONFAIL

Save the file, then you can start Driver and go straight to the missions!!