Many thanks! In fact, before reading your answer, i found http://www.winsupersite.com/showcase/windo..._slipstream.asp And i follow step 2: how to extract! As soon as i have understood that /extract switch was a command line from cmd, it has been easier! So i renamed my sp1 and sp2 files easier and extract them to my office 2007 updates folder And i burned the full Office 2007 folder on a DVD with Nero And it works, i have just installed it on a laptop! NB: My only regret is about the size! I hoped slipstreaming Office 2007 with Services Packs will give me a folder less than 700Mo, or i have now a folder of 1,18Go!!!