Slipstreaming SP1 into Vista install disk

Alright, so I have Vista working now (long story, but it included reinstalling again). Anyway, SP1 for Vista takes longer than all three of the service packs for XP to install! So, to avoid future hassle when I reformat (which I will be doing again in the somewhat near future), I was wondering if anyone knows a good effective method for slipstreaming SP1 into Vista?

Actually, slipstreaming anything into Vista. I saw a few methods from a Google search, but am not sure they are the best way(s) to go about it. Any suggestions would be much appreciated. Hell, it'd be awesome if there's an actual slipstreaming program for Vista... but for some reason that doesn't seem to be the case?

 

http://www.majorgeeks.com/vLite_d5387.html

 

Thank you very much!