Just got done spending the night rebuilding my system after trying to install the 7199 drivers.
I first deleted the old ATI 7093 drivers and brought my computer up in VGA mode. Tried installing the 7199's using the SETUP.EXE, but it first complained that the driver was not authorized or "signed" by microsoft to be compatable with Win ME and that I should not install it, though I installed the "Win ME" drivers. I proceeded anyway and then it tried to copy an .inf file with an older date than the one I already had. I proceeded to keep the one I had (I later installing the older dated file with same results).
It was downhill from there as Windows would not display on my flat panel (the one I use instead of my projector at times like this). I had to load the standard VGA driver to recover but it could not even do that. I don't know how many times I had to go into Safe mode to access the desktop. Every time I tried deleting the new drivers and going back to the 7093's it complained I needed a VGA driver to start with. I thought I was in an endless loop. I finally got out of it by fooling Windows and updating the bad drivers with the good (7093) driver files, answering "no" to the older date question on many of them. I finally had to struggle to get PS3 working again - I created a new pstrip.ini which did the trick. I think I'm back to normal again finally.
I knew this driver sounded too good to be true.
Carey