can't load the installer for SCSIAdapter and a bunch of other problems

it started when i tried to install a new program but i'm starting t
think the problem was there before that.

when installing the prog, i get a "Windows could not load the installe
for SCSIAdapter. Contact your hardware vendor for assistance" error.

i used to have 2 things in the device manager SCSI secsion. 1 was
CloneCD virtual drive which i never used. and 1 was MBUltra133, no
even sure what that is, but i know it gave me a message in DOS abou
"MBUltra133 bios is not installed because there are no driver
attached" so i disabled it in BIOS and now there is no SCSI secsion i
Device manager at all. Only when i try to install this prog, 1 shows u
but not for long cause i get that error and installation doesn'
finish.

there is also an error in setupapi.log file.
#E144 Loading module "C:\WINDOWS\System32\SysSetup.Dll" failed. Erro
126: The specified module could not be found.
#E161 Processing of call to class installer failed. Error 0xe000020d
The class installer registry entry is invalid.

help..

--
demens