have a look at the below link to create VIB and also refer my blog to install http://pibytes.wordpress.com/2013/02/17/vmware-esxi-network-driver-install-and-upgrade/
http://blogs.vmware.com/vsphere/2012/04/using-the-vsphere-esxi-image-builder-cli.html
http://www.virtuallyghetto.com/2012/09/creating-custom-vibs-for-esxi-50-51.html