You can either (1) use a batch file to install all hotfixes or (2) integrate them into your source files. The first option will install a clean copy of the operating system, afterwhich all the hotfixes are applied. This means that your installation media will contain for example 500MB worth of operating system and 200MB worth of hotfixes. Your hard disk will contain in this example an up-to-date operating system worth 1500MB with an uninstall folder for each hotfix, totally worth 500MB. The installation media for the second option will contain the operating system, with all the hotfixes integrated. This means that the old and/or no longer needed files are deleted and/or replaced by the updated files. The operating system will not be 500MB anymore, but 600MB. However, you will no longer have all the hotfixes seperately on the installation media, so in this example you will have gained 100MB on the installation media. Your hard disk will contain in this example an up-to-date operating system worth 1500MB. However, you will no longer have an uninstall folder for each hotfix, gaining you 500MB. The choice is simple I think Microsoft has included an /INTEGRATE option for all recent hotfixes by the way, so you don't need nLite or HFSLIP to update your source files necessarily. Hope this helps!