I looked into that some, and it doesn't appear to be possible. It looks like the Netbeans VP is set up for regular JSF development, including doing your backing beans for you, etc. I'm sure that it will support Seam-style development, because it's such a great tool and Netbeans is quite focused on both GUI building and J2EE, and Seam has to do with both. I'm looking forward to it. It's a bit silly that I can drag and drop together a beautiful Swing app but not a Seam web app using Netbeans. I'm sure that will change soon.
is there a way to use Seam and Netbeans Web Visual Pack toghther ?
Go and request it from the NetBeans guys. We have already asked ;-)