My problem that I could not use my Epson ACL C1100 printer has been solved thanks to the suggestion from Kpop! Solution is simple! I used Bonjour, selected the "Generic/Postscript" printer and voila, all worked marvellous! Strangely the printer is now defined as "HP Color LaserJet 4550 PS" this apparently was done by the installation process. I have no idea whether this can be used by any other printer but if so than the USB/printer problem could be seen as solved by Parallels.