Rename machine with SQL server

I'm trying to write a script to run after changing the computer name of a machine running SQL Server 2005. I know about the article on the SQL Developer center that talks about sp_dropserver and sp_addserver. My question is about the Windows groups that are created with the machine name embedded inside (e.g. MACHINENAME\SQLServer2005MSFTEUser$MACHINENAME$MSSQLSERVER).

Do I need to worry about these? If the answer is no because the name of the group is irrelevant, how do I go about changing the machine name for the login (i.e. the MACHINENAME in front of the slash)? I don't want to hardcode these group names into my script.

Thanks for any help.

There is no need to do anything with those local groups. They're created when you install/setup sqlserver. When you change the computer name, you would need to update sqlserver so that its servername matches up with the computername. See the following article for more detail.

http://msdn2.microsoft.com/en-us/library/ms143799(SQL.90).aspx