SP5 seems to work great using nLite to slipstream with I can't seem to get the /integrate to work with da.exe, ic.exe, or da.exe and nLite doesn't like em either At the command prompt I am typing: da.exe /integrate:c:\temp\win2k It extracts and then gives an error: An error occured while attempting to integrate this software update package. Verify that the architecture, language, and service pack level of this software update are valid for the target distribution folder. Using the /update command does nothing either. Any help on how to slipstream the option packs?