[otrs] Ticket number

Hi there, I have installed OTRS 3.0 beta6, just trying to implement it in our company's workflow. Currently the tickets in this system have IDs in form YYYYMMDDXNNNNNNN, where YYYY - year, MM - month, DD - day, X - some strange magic number and seven X-es are serial counter. For example, Ticket#2010110410000069. Our users complain that this is a lot of numbers, they are redudant and can be shrinked and zipped to, say, yyMMDDXNNN. Is it possible to do so by redefining some perl structure in Kernel/Config.pm? Thanks. -- Serge A. Ribalchenko