Import template/VM to vCloud Director catalog with PowerCLI

This is a 2 part question:

Part 1: I have about 24 virtual machines/templates in VC and would like to automate the import of these into the vCD catalog instead of doing it though the gui. I don't need the entire script just a sample function/method to use and the parameters needed

I'm thinking I would need the Import-CIVApp and then use another method to convert those vApps to catelog items, just want to confirm:

http://www.vmware.com/support/developer/PowerCLI/PowerCLI501/html/Import-CIVApp.html

Part 2: Once I have the VM's in a catalog, is it possible to create a  vApp, add the VM's to it and customize it (Network Settings, IP settings etc..) and then add the networking to that vApp.

Thanks!