"I start the computer and Windows 98 screen appears. I downloaded and unzipped Turbocnc, placed it in C:drive. I then restart in MS-DOS. It comes up "C:\Windows>", so my command is "cd \", then Enter. The screen then goes to "C:\>". I type "Turbocnc\turbocnc", Enter. Goes back to the desktop. I go into "My Computer", C drive, call up Turbocnc, then it goes to the screen that says "press a key". A line on the screen then says "Problem! Could not find tool file." Does this seem like I am booting up correctly? How do I locate the tool file?"
Instead of typing CD\, Type CD\Turbocnc as this appears to be the directory that contains all your files, then typ turbocnc to start the program. I assume that you have a file for tools *.tol (do a directory list to confirm this)
"It dry verified perfectly, but on the first run attempt stopped at the 7th line with a speed error on the spindle speed."
If I remember correctly, there is a max. spindle speed that is allowed by Turbocnc and I think it might be around 5000. So unless you have a software speed controller, show your speed as something else (say 2000 rpm). It won't make any difference to Turbocnc as it is not controlling anything.
Hope this helps and let us know if we can help further.