I connect to the microchip using RS232.

You need a chip to translate the signal to TTL (Forgot what TTL stands for), the chip is MAX232:


The help file for MikroC has a nice diagram on how to connect the chip to the microcontroller, I looked up on Google, and I did not see any that are good.

By the way... you can Download MikroC: http://www.mikroe.com/en/compilers/mikroc/pic/
and you can use it for free, but it's limited to 2K binary output. The help file is complete though, so you can look through it, and find the diagram on how to connect the microcontroller to the MAX232 chip.