Not able to Create website at root level in iis7 using web deploy 3.0 using import manager

hello All,

I am trying to create new website by imporing .zip package build by VS2012 using import manager and using Web deploy V3.0 ,

it is failing giving error that  "Selected package coontains application which cannot be installed at server level".

Can someone please explain or provide detailed link for How can we create package so that it deployed at site level  including application pool settings.

Thanks,
Rohit