Thanks SINNuT, one step forward But I need more help, is there some kind of guide ? I have looked at MSFN unattended guide but they dont explain in a understanding way, look here: ->In this section, we'll be showing you how you can install applications silently without user interaction. Each page will show you the necessary batch commands you will need to use. You will need to add these commands to your own batch file which will run from [GuiRunOnce]. You can see how I've done mine by looking at start.cmd in the Examples page. I mean for instance , where should I use the batch commands ? Ok, I understand that I should alter files (it looks like the runonceex is best?) but where do I find this file ?? is it on the xp cd ??? What about the cleanup file ? should I use that ? where is it found ? where should I place it ? Many questions there, hope someone can take their time to answer I tried to download the .net switchless installer at ryan´s but why does it say on ryan´s side that the .net file is 11MB when it is only 262Kb ?? ( http://ryanvm.msfn.org/ )