[otrs] Your opinion about configuration ?

Hi everybody, I need to produce stat from OTRS like this : number of ticket by queue and tech' by year (and order by tech'). At this moment, i configured otrs like this : Each queue is a category of software or hardware. For example, there is a queue for Microsoft Office 2003, one for OpenOffice, another for an account software version XX, etc. I know how to produce stat that count number of ticket for a given period but I don't have tech ! Best regards Jerome