Yes, like I said, put your actual commands in a batch file, not in cmdlines.txt itself (since it can be buggy). Let cmdlines.txt only call your batch file, nothing else. Put the actual commands, like "regedit /s my.reg", in that batch file. Most hotfixes can be installed silently with /quiet /passive /norestart. You can extract most hotfixes with the /x parameter, if you want to obtain a MSI for example. MSI's can be installed silently with /qb (progress bar) or /qn (completely silent). Edit: You can also use /? on most hotfixes, it will show you what switches are available.