Vista - Can't complete install

I have tried everything I can think of, or can find on the web, but Vista
still will not install on my D drive.

XP is on C (80GB). I tried a few times yesterday to install Vista to spare
space on D (120GB). Boot manager reported that I had a few copies of Vista
and one of Home Premium.

I installed from the DVD. I tried from within XP. I rebuilt the bcd. Nothing
worked.

Finally, today, I wiped the drive completely clean (via format), reinstalled
Vista HP once, and yet Boot manager says I now have several copies of Vista,
and STILL can't find winload.exe to complete the installation and run it.

Help!