[CentOS] quick question on machine name

I have a box I just installed centos 4.5 on.

The name of the machine in /etc/hosts is TomSlick.xyz.com TomSlick (for 
example).
the name of the machine in /etc/sysconfig/network HOSTNAME=TomSlick.xyz.com

Note both are upper case:

Yet when I login as root the prompt is showing me tomslick in lower case 
not a combo upper lower.

I have grepped /etc and below for tomslick and cannot find why this 
machine name is not a
combo of upper and lower case.

I have never ran into this before. Where is this???

THanks,

Jerry