RHEL 5 kickstart on ESX (vmxnet3 driver)

Has anyone figured out how to get the necessary VMware modules added to a RHEL 5 boot iso to recognize the Network Interfaces (vmxnet3)? The documentation I found on the web was not helpful - so, I wanted to reach out to a group of people I trust ;-)

Unfortunately we cannot implement PXE/tfptboot in our environment, so our routine involves a boot iso created from our kickstart tree.

Recently VMware apparently has removed the e1000 NIC option from ESX? So - we are pretty much unable to build/kickstart hosts from our boot iso now.