One question first: What's a "whack of applications"? Anyway..... The best site I've found for Multi-Boot DVDs has to be FlyAKite's Web Site, particularly if you're wanting to include multiple versions of the same OS. Best site for learning how to make a unattended Windows install is MSFN's Unattended Windows Tutorial, which has a lot of information on how to do so. If you're planning on supporting a lot of computers, also look at Bashrat The Sneaky's DriverPacks, for you will need plenty of drivers. Probably also look at RyanVM's Post-SP2 Update Pack, to totally slipstream all the patches into your install source. If you want to make XP look purty too, look for XPize. Gosh's Web Site also may contain some interesting info for your project. Software Silent Install switches: MSFN Unattended Application Switches. For software installs that won't silently install, I recommend AutoIT to script the software install. That's what I've done with my Multi-Boot DVD. On the hard drive, it sits at approximately 13GB. On the DVD, it sits at 3.9GB. Hope this helps!