How to customize WBS Bundle

Hi,
I’ve created bundle on my website. I’ve the following question
1) If one product is out of stock, add to cart button is still there. Is my visitor click on it, an error message appear. But, when I’m using the Up Sell option, the upsell popup appears and hides the error message. How can i change that ?
2) If one product is out of stock, how I can put the bundlle Out Of stock automaticaly ?
3) How I can hide the short description into the bundle ?
Thanks for your help