First, try verifying that you have a RS232 connection between the
microcontroller and the PC.

To do this, program the "RS232 test program" into the micro, and see
if it prints [alive] on the screen.

I can verify that once you get it working, it works well - I've tested
it many times myself with multiple projects.

--- In microchipC_pic18Fx_bootloader@yahoogroups.com, "shaopint"
<shaopint@...> wrote:
>
> i'm new with all the PIC and boot loader. I'm using the TruTrack Boot
> Loader to write the program to the PIC. I make all the necessary
> connection for PIC18F452 and MAX232 to the com1 but the message error
> pop up as connection not acknowledge! It there any setting i must make
> in my computer to establish or open the port? The circuit connection
> is correct as I already check several times. I really don't know what
> wrong with it... Can any1 help me? thx.
>