Upgrade to Mountain Lion and Bootcamp ?

Hello,

I have a Macbook Pro with 3 partitions :

- 1 partition OS X Lion

- 1 'recovery' OS X partition

- 1 Bootcamp partition with W7, created with Lion

I should want to upgrade OS X in Moutain Lion. If I buy ML from Appstore and install it on my current oS X Lion partition, is there any risk to damage or scratch the Bootcamp partition ? Is there any special care to have, any special action to do ?

After upgrading OS X to ML, will my Bootcamp partition be still able to boot ?

Also, will there be any thing else to ? For instance, I think that I have currently bootcamp 4.0 drivers on the W7 partition. Will I have to launch bootcamp assistant again from ML, in order to download new .exe drivers, and to have them to be installed on W7 ?

Thank you