Here's what I use:

Install vnc-server RPM. Then edit

/etc/sysconfig/vncservers
	VNCSERVERS="1:squeakvnc"

This will cause /etc/init.d/vncserver to start a vnc server on display 
:1 for the user squeakvnc.

Squeak itself is started in $(HOME)/.vnc/xstartup for the user 
"squeakvnc". Very straight-forward.

- Bert -