Hey Vegas Guy! Yeah, I saw that hack...well, not really a hack...more of a modification to wiring to get it to work. Personally, I wouldn't want to do this...being a new car and all.
Here is the detailed way to get it to work in the IS350...I think IS250 as well.
http://clublexus.com/forums/showthread.php?t=193739
Hope its okay to post instructions from another board???