Thank you for using the Support Forum. There will not be a driver for the 133 and Windows 7 but you can use the Global Driver. The Global Driver should work for your machine and Windows 7. Please give the global driver a try and if this does not help please consider contacting your support centre for further assistance.
Thanks, CherylO-Xerox Community Manager
Be sure to click Kudos for those who have helped you. Select Accept as Solution for posts that have helped to solve your issue(s)!