QMAIL- QUEUE FILE SYSTEM FULL

[qmailu]

Hi,   I have setup qmail with 3.5 lac users and my filesystem which contains qmail,vpopmail and hence the queue has become full. How can i move the qmail-queue to a different file system (I already have another file system with plenty of disk space. I currently have 15000 mails in queue. I want to clear my queue right away without having to wait for the queue to clear by themselves. Is there a way to start clearing this queue.   Raghu