How to Fallback?

NIS09 introduced so many errors and difficulties, like 6 restart just to get to the next level engine, and now the LU failure, I just about had enough. NIS08 was working just fine, and NIS09 does not do anything special for me, I dislike the background tasks and idle scans and I can not take advantage of SafeWeb  because I don't use IE.

I want to reinstall 08 from my CD
My questions are

1) activation: do I use the 09 product key? I have about 250 days left

2) is there a way I can restore my parental block list from either 08 or 09?

 

thanks