The executable for the Calculator is usually located here:
C:\Windows\System32\calc.exe
If the file is no longer there, then try to go to
add/remove programs and clcik on install windows
components (you'll need the CDROM)
If you have only deleted the shortcut, you can go to start>run and type
"system32"(no quotes" click ok. Look for "calc", r-click and choose "send to
desktop" create shortcut. From there, you can move the shortcut wherever you
want.
Control panel---add/remove programs---on left side add/remove windows
components---under accessories you will find the calculator. Sometimes
removing the X, reboot, and then reselecting the calculator corrects
everything.