WayneJ's video series on PIC programming
Video #1 the .asm file, change it to PWM or non-PWM
Video #2 MPASMWIN software to create a .HEX file <------- Simplest method (great for beginners! )
Video #3 MPLAB v8.10 and build the .asm file to create a .HEX
Video #4 the PIC using MPLAB v8.10
Video #5 the PIC using PicKit1 flash software and generated .HEX file.