MOSS 2007 configuration failed

After installing MOSS beta 2, I launch the configuration wizzard to create config Databases and built IIS sites, but it failed with this error notification :

Task configdb has failed with an unknown exception Exception: Microsoft.SharePoint.SPException: The language is not supported on the server. ---> System.Runtime.InteropServices.COMException (0x8102005E): The language is not supported on the server. at Microsoft.SharePoint.Library.SPRequestInternalClass.CreateSite(Guid gApplicationId, String bstrUrl, Int32 lZone, Guid gSiteId, Guid gDatabaseId, String bstrDatabaseServer, String bstrDatabaseName, String bstrDatabaseUsername, String bstrDatabasePassword, String bstrTitle, String bstrDescription, UInt32 nLCID, String bstrWebTemplate, String bstrOwnerLogin, String bstrOwnerName, String bstrOwnerEmail, String bstrSecondaryContactLogin, String bstrSecondaryContactName, String bstrSecondaryContactEmail, Boolean bADAccountMode, Boolean bHostHeaderIsSiteName)...

After looking arround the net, it was a default language conflict, It can be resolved but adding a registry entry, so have fun with the new MS Portal : (just copy the code on a .reg file and execute it!)
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\12.0\ServerLanguage] "1033"=""