A Little Clarity Please
 

Among all of the discussions I have read I am totally confused.

1) When I upgrade to Vbulletin 4.0 will all of the products I have installed be null and no longer work? (If that's the case* I can't upgrade)

2) Will my style no longer work?

3) I use Vbadvanced* Am I to guess that it will no longer work either?

4) So after I pay the first (discounted* if it is) fee* I will no longer have to pay anything ever again?