Another program starts the Windows Calculator. How do I get it to run Calc98 instead?
The executable for the windows calculator is usually called “calc.exe” and can be found in the Windows directory (typically “C:\Windows”). To replace this with Calc98, first rename “Calc.exe” to e.g. “Calcexe.old” and then create a shortcut to Calc98 and rename it “Calc.exe”. If for any reason you need to reverse this process, delete the shortcut and rename “Calcexe.old” back to “Calc.exe”.