I'm new to this, so bear with me. The answer to my question, I'm sure, are many. However, I'll ask it anyhow. What is the typical size of an ISO after slip streaming? I took my XP SP2 and added SP3 as well as a number of add-ons (AVG, ZoneAlarm, K-lite, VLC, Filezilla, Flash, Shockwave) and OnePiece's Post SP3 update pack. For some reason I was assuming that the resulting ISO image would be small enough to fit on a 700MB CD-RW disc. It appears that I will need to burn the ISO to a DVD with at least a 4.7 GB capacity. My ISO file is in the neighborhood of 1.2 GB in size. Does this sound plausible and what you would expect given your familiarity with this process? Thanks, INTI I've attached my Last Session INI file. What is the difference between it and the Last Session_U INI file? LAST_SESSION.INI