giving different name for a scanned 2008 server

Hi there,

As the subject name.

Let's say I have a Windows Server 2008 with the computer name as: MAINSERVER.domain.com
when scanned, as expected, the name will be listed as MAINSERVER.domain.com.

Just wondering if we can label it differently?
I want it to be called SERVER001 and maintain that name for future scan.
I can edit the name without any issue, but when scanned the next time, it goes back to MAINSERVER.domain.com.

This is the entry on my DNS serer:
HOST - MAINSERVER - 10.0.1.11

I've tried adding ALIAS - SERVER001 - MAINSERVER.domain.com.
Also tried HOST - SERVER001 - 10.0.1.11
it still goes back to MAINSERVER.domain.com when scanned.