You can use

DEFINE LOADER_USED 1
OR
DEFINE RESET_ORG 0h (for PIC 18F)

(both are in the manual)


Then I suggest to have a look at my personal favorites:

-Tiny bootloader: http://www.etc.ugal.ro/cchiculita/so...bootloader.htm

-Colt bootloader: http://mdubuc.freeshell.org/Colt/

J-P