[Printing-user-general] Problem with Oki B4100

I'm running Ubuntu 6.06. I have an Oki B4100 printer. There are no drivers for
it on the Oki-site, but I can use the drivers of the B4200 printer. This works
but I have the following problem: The print on the paper is moved a bit up, so
at the top of the paper there a piece missing, and at the bottom there an extra
white border.

what it should be:            
 ----
|A  |
|B  |  <-paper
|C  | 
 ----

what it is
 ----
|B  |
|C  |
|   |
 ----

Is it possible to solve this? Maybe by changing something in the *.ppd-file?
(this is the original ppd:
http://belgium.oki.com/binaryData/6683/ok4200pcl.ppd.gz)