I wrote this both to Hazar and Orbit30... I think that Microsoft may create an windows update that finds the win7 lo*ders, and so they will be disabled. This can be easily achived by searching the "grldr" or "bootmgr" file; if present, then it's considered an "exploit" and it will be disabled. This can be avoided with a script that modifies the filename "grldr" and "bootmgr" to a random name (maybe using specific PC criteria - CPU, MAC, MB serial, etc...), so each PC station will have their own boot filenames, which cannot be traced by Microsoft. It's just a suggestion, if you can implement it and if it worth it, it will be nice!