Is it just one document or any that you create with the same AutoText?
I'd suggest bit of maintenance first. Reinstall both the graphics and printer driver and make sure that they are up-to-date. With all applications closed, make sure that the temp folder is empty: if not delete all the contents.
Is the AutoText coming from the template the document's created from or is it residing on each users' PC? If it is on each PC, try replacing the template that holds the AutoText.
Check in Tools, Options, Compatibilty and see if the Use Printer Metrics is set ot the same for both PCs.
Regards: tf1