os could not load c:\windows\system32\shell32.dll. error 0. unable to load dynamic link module shell32

i am new to the forum,  but a long tome MS user. i am running  MS PowerDraft 2004 Edition 08.05.02.35 . i am replacing my old PC computer (8 years old) with a dell OptiPlex 790.

i have loaded the MS V8 software and i am having a few issues and not sure if they are related. However, I first install V7 by mistake and i uninstalled it.

1. there are two MS program options…when I go to the windows start button to program files – MS and MS (high security) why is that?

2. receiving this message "os could not load c:\windows\system32\shell32.dll. error 0. unable to load dynamic link module shell32" in a DOS window but MS opens

3. I will post this separately but wanted to mention in case it’s all related. When I select text to edit the text does not appear in the word processor….its invisible. In addition, it is VERY slow to load. When I click the reset button, the text disappears from the drawing

Any help is much appreciated!