[otrs] Multiple OTRS on Apache Virtual Host

Hello, I'm going to have to setup OTRS in a short time, and I think that being able to setup multiple OTRS using Apache Virtual Hosts could help me to get it in time, but is that possible? Has anybody done it? I've been reading the whole mailing list archieve and I have not found anything like that. The system ID should have to be different, but mod_perl could give problems? Could anybody who has already done this give me any clue? Thanks in advance J