You can't...... Everyone says that SP1 makes Vista faster and more stable . . . . which is really great . . . . but . . . . 1. Vista is so bloated you really need vLite. 2. If you remove the wrong thing with vLite, the SP1 installer crashes, BUT it won't tell you what is wrong -- it just gives you a meaningless error number. So, you have to spend hours and hours experimenting to figure out what the problem is. 3. OK, So I'll wait till SP1 is officially released and slip-stream it into Vista and then use vLite on that. OOOPS, Sorry. Can't do that. Microsoft has changed the SP1 installer and says that you won't be able slip-stream SP1 into Vista. 4. So, in a couple of months, when SP1 is officially released, someone will get a full DVD of Vista with SP1 integrated and upload it to one of the warez groups. Microsoft complains constantly about piracy and then does stupid crap like this that encourages people to go out and get pirated copies of Windows.