Problems Upgrading SQL Server 2005 X64 Evaluation To SQL Server 2005 X64 Enterprise

I first tried installing the DVD and of course it told me I must use the command prompt installation method to include the line SKUUPGRADE=1. I found good references to this in the following links:

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2208593&SiteID=1

http://msdn2.microsoft.com/en-us/library/ms144259.aspx


Below is the command I issued at the command prompt:

start /wait d:serverssetupsetup.exe ADDLOCAL=ALL INSTANCENAME=URHCS63SQL2005DSS UPGRADE=SQL_Engine SKUUPGRADE=1 /qb


My servername is URHCS63 and my instance is SQL2005DSS.

When I execute this command, a installation dialog box opens briefly and then disappears and nothing else happens. Here are the results of the bootstrap log file:

Microsoft SQL Server 2005 9.00.3042.00
==============================
OS Version : Microsoft Windows Server 2003 family, Enterprise Edition Service Pack 1 (Build 3790)
Time : Thu Oct 25 16:17:48 2007

URHCS63 : To change an existing instance of Microsoft SQL Server 2005 to a different edition of SQL Server 2005, you must run SQL Server 2005 Setup from the command prompt and include the SKUUPGRADE=1 parameter.
SQL Server Setup was interrupted. For more information, review the Setup log file in %ProgramFiles%Microsoft SQL Server90Setup BootstrapLOGSummary.txt.

Time : Thu Oct 25 16:20:08 2007


Any ideas on why this is not working for me?