I'm not following, can you or can you not use vLite? Is this an issue of vLiting a previously vLited installation? Have you tried starting fresh, wtihout any tampering from the original DVD? Yes, this is an issue of vLiting a previously vLited source which I vLited myself not Dell or other ppl. Before this, I can integrate any hotfixes (post SP1) without problem even if I already vLited it dozens of time, but not recently with that I-don't-know-what-the-exact-error-is problem. Of course no problem when vLiting from original not-tampered DVD. And I just want to add before I forgot, before installing Vista SP1 on PC I used to vLiting Vista, vLite crash quite often and produced a BSOD, and seems the WIM filter engine is the cause. After restarting my PC, my Start menu will be rendered useless. But that was fixed in Vista SP1 though. I've also uploaded the full files/directories listing of the mounted WIM: http://mihd.net/3l0z7d6 also on the vLited WIM file I already integrated these post-SP1 updates/hotfixes: - KB905866 - KB937286 - KB938371 - KB941693 - KB943729 - KB947562 - KB947864 - KB948590 - KB948881 - KB950759 - KB950760 - KB950762 - KB951376 - KB951698 - KB952287