FILESCD is used for users to place files they will need. For instance, in FILESCD\I386, you would find the winnt.sif file, which is only updated by the user. Other locations, i.e. $OEM$\xxx are done by the user as well. XPCREATE does not verify if one file is newer than the other. It just copies them over during the process. To sum it up, users need to check version dates. XPC does not do it for you.