Leopard "re-install" clean install?

Hi,

sorry for the stupid title, but I can't figure out how my problem translates correctly into english...

So what's my issue:
I have a MBP which initially came with 10.4 and I upgraded than to 10.5. Just put the DVD in and let the machine do everything by itself more or less. Eventually I tried to get Win XP via Bootcamp on it, though it didn't work out the right way and some mysterious problem occured. Now I'm stuck with a boot camp partition which doesn't work.

So after I learned from the hotline that myway of updating the OS was not necessarily the best (fastest) option to do, I decided to do a clean install anytime soon - today

On Windows I knew how to do this, but on my mac... Several questions come to my mind:

How to do this? Is it just enough to usw the migration manager for backing up my data.
What about my iLife and iWork that shipped with 10.4? How does it know that I have a licence? I just have the original 10.4 DVD.

Will all my settings be lost? iPhoto, Office,...

Is it a good thing to do at all or am I just nuts?

I really appreciat your help or links to pages where I find help.

Patrick

 

Hi,

I bought a regular copy of Leopard, so it should not check for Tiger.

Would be nice if I could keep all my photo, picture library as they are. They are on my internal hard drive.

Thanks.