OT: How to change the cache location?

[Martin Schaff�ner]

This might be a little OT, but could anybody tell me how to change the
location of the mozilla cache directory? I cannot finde any place to 
set it, as under Netscape, and it does not honor any changes to 
prefs.js. What can I do?

TIA
-- 
Martin Schaff�ner
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