[OT] 2 mysql -> 1 server

hi all,
For testing, i need to realize a server with 2 version of mysql that listen
different ports. The first one is a 4.1 installed with swup, the second one
( 5.0.37 ) compiled.
Each version use /etc/my.cnf and i can't find out the way to change it.
Could anybody help my please?

thanks a lot

lore

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