X config problem

[Harvey Ussery <huboxwood@earthlink.net>]

I've just installed DebianPPC3.0(Woody) on an 833Mhz iMac 17"LCD and am 
having trouble config'g XFree86--simply cannot startx.

X -showconfig
warning: process set to nice value 0 instead of -10 as requested

Have consulted man nice & info nice, but do not understand how an 
adjustment of nice to -10 is to be accomplished (what command to enter & 
in what context) and how it is related to the failure of startx.

Any clarification much appreciated.  Thanks.    --HU