Both the machine in the original post and the machine in Reply #3 are IGT PE+ drop-in bartop video poker machines with embedded bill validators, but I agree with Tilt that the two pictures are not of the same machine.
To the OP: if you need help with your machine, please post pictures of your specific machine, not just random pictures you've found on the internet. We're doing our best to help you based on the pictures you provided, but if the machine pictured isn't yours then we could be giving you bad information.
There is a how-to guide which shows how to use a SET chip to enable your dollar bill validator (DBV). It is a sticky topic here in the PE+ section of the forum (here:
http://newlifegames.com/nlg/index.php?topic=334.0 ).
The SET chip can be purchased from many of the vendors who support this site. If you have the ability to burn your own chips, you can probably find the file you need floating around on some of the MAME websites, as the PE+ was ported to MAME a while back.
Due to copyright issues (even on a relatively ancient machine), we are unable to post copyrighted files here, nor facilitate the sending of such files through the NLG website.