Didn't read link above but this is a must. Change the rc.sysinit file on about line 30. It's in /etc directory. Should read
Where xxxxxx is what you want it named.
To make sure it is working look when it first starts to boot init it should say setting hostname to xxxxxxxx. If you see that, you are good to go. It should take care of the rest. I have also read that if it is not set correctly that you will have problems with x crashing and such. Don't know why, that's what I have read.
Hope that helps