You can setup a SQL Alias using a .reg file, here is a sample keep in mind that its from a windows XP client so may need to be modified for Windows 7, Server 2008 etc...
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServer\Client\ConnectTo]
"AliasName"="DBMSSOCN,ServerName\\instance"