Slipstreaming with ESX4.1 ISO

Hi Folks!

I am in the process of trying to get some new Intel 10Gb drivers slipstreamed into the ESX4.1 ISO.  I've found Patrick VanBeek's blog that shows how to do it in the version 4 of the ESX installer cd:

http://patrickvanbeek.wordpress.com/2010/01/30/slipstreaming-drivers-in-the-esx4i-install-iso/#comment-25

Unfortunately, something missing from his blog post is the fact that TRANS.TLB is not on the 4.1 ISO.  I've since asked Patrick about it and he's just not sure (follow the link above and scroll down to the comments).

So here are the issues:

1.  ESX4.1 ISO does not have TRANS.TLB

2.  I need to slipstream the latest Intel 10Gb drivers to make an unattended installation for many servers (either add or replace)

3.  I cannot find any documentation from VMware that list how to modify the ISO and slipstream the files.

Any direction or help would be appreciated.  For completeness sake, the Intel Drivers I'm looking to install are:

vmware-esx-drivers-net-ixgbe-400.2.0.84.9-1vmw.2.17.249663.x86_64

This would replace the driver that IS on the 4.1 CD now: vmware-esx-drivers-net-ixgbe-400.2.0.38.2.5.1-1vmw.0.0.260247.x86_64

If anyone knows how to slipstream the drivers I'd be all ears.  Thanks in advance!