Normally you go to /usr/src/sys/arch/i386/conf
Change the config file and start the procedure.
But when do you have to 'make clean' ?

Is this the right procedure? :
1) go to... /usr/src/sys/arch/i386/compile/<MYCONF>
2) and then 'make clean' ?

3) And after this you go again to /usr/src/sys/arch/i386/conf and then
4) config <MYCONF>
5) cd ../compile/<MYCONF>
6) make depend
7) make 
8) mv ...........

Bye,

Reinoud.