If you prefer to edit your 16F819.INC file, then just change it to;

__CONFIG _INTRC_IO & _WDT_OFF & _PWRTE_OFF & _LVP_OFF & _MCLR_OFF & _BODEN_OFF & _DEBUG_OFF

If not, then just comment it out in the .INC file & add your config settings to your code.

Melanie posted a nice intro here http://www.picbasic.co.uk/forum/showthread.php?t=543 on setting config options.

NOTE: This applies only to the 16F819.INC file in your PBP directory. Not the P16F819.INC
file in your MPLAB directory. These are different. You shouldn't ever need to modify the
P16F819.INC file in your MPLAB directory.