QReport specify workfile directory?

Could someone tell me how to specify where QReport writes his workfiles. In my situation, they are placed
in the directory where the EXE is on (on the server). There are some negative effects in performance
(lots of traffic) and systemmanagement (the space the users should have on the server).

Thanks in advance

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Marco Heerebout
E-MAIL  : m.heereb...@trendsoft.nl