Hi Antonio
The Xerox driver for the 7132 is for 10.3.3 or later. Apparently they dont have one exclusively for 10.4
It can be found here, in case you don't have it.
PS OSX 10.3.3 Driver Installer
However, on the Xerox site this particular message for the Xerox driver for the 7132 (10.3.3 and above) notes:
Note: The Print Type, Accounting, and Graphics (Image Options) are not supported on Intel based Macs running in Native Mode. In Native mode, many of the image options can be accessed in the Printer Features dialog.
As you have an Intel based Mac, this may be problem.
If you can install the driver, run Repair Permissions, found in Applications/Disk Utility.
However, it appears that this printer is not particularly suited to your machine, perhaps until they bring out a driver especially for 10.4.
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regards roam