[Koha] opac url

hello how can i change opac url for example http://192.168.1.111/data/0002/000/001/1.pdf to be like this http://192.168.1.111/xxxx/xxx??/xx any helpthanks _________________________________________________________________ Windows Live: Keep your friends up to date with what you do online. http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/soc...