Okay here's the solution to it:-
First Step, on your windows PC:-
GOTO Start, Search 'Programs and features', to the right, select "Turn Windows feature on or off".
Next, expand 'Print and Document Services' and check "LPD Print Service" box.
Second, on your Apple computer:-
Goto 'PrinterSetup Utility' and while holding 'Option' button, select 'More printers'.
Next, select advanced from the 'Menu' and in 'Devices' select "LPD/LPR Host or Printer".
Lastly, Click 'add' in the 'Device URL'.
That's it. You should be able to share now. Write back to me, should you have any doubts about this. Thank you.