Upgrade from Windows Server 2008 32bit Std to Ent

plz read that post
http://serverfault.com/questions/34846/in-place-upgrade-from-windows-server-standard-to-enterprise-or-datacenter

You don't boot your computer from the DVD to perform an upgrade.  Instead, you start your computer as normal, insert the DVD and run it.  Choose Enterprise edition and enter an enterprise edition key and it will upgrade.

Windows Server 2008 R2 Upgrade Paths
 http://technet.microsoft.com/en-us/library/dd979563(WS.10).aspx

You cannot upgrade directly 32bit server version to 64bit. You have to do it clean install.

Regards,
Krzysztof

He's not trying to go to 64 bit.  He clearly stated "My current OS is Windows Sever 2008 32bit Standard.
I want to upgrade to Windows Server 2008 32bit Enterprise Edition."

Microsoft OS Upgrade Path
microsoft.bmp

Try uninstalling any service packs, to restore the machine to the same 'SP' as the install disk.

u can upgrade to Windows Server 2008 32bit Enterprise Edition

Sorry, my mistake :/ there is written cleary that he needs upgrade from 32std-32ent

My appologizes :)

davesgonebananas suggestion appears to address the issue:

As advised i tried to boot my Server from server 2008 dvd

Dave has suggested to "boot into your Windows Server 2008 Standard, THEN insert the Windows Server 2008 disk and run it

Hi Emredrum76.
Just to be sure .
I normaly boot my server then insert windows installation disc and run setup.
Using the setup wizard i just input the new windows server 2008 32bit Ent Key?.
Does the media version has to be the latest?
If so can i download the latest and from which site?
thanks