Hi,

From µChip MPLAB Programmers HELP :

ID Location : Program or verify the User ID. You can set the User ID by selecting Configure>ID Memory.
From '628 Datasheet

14.10 User ID Locations
Four memory locations (2000h-2003h) are designated
as user ID locations where the user can store
checksum or other code-identification numbers. These
locations are not accessible during normal execution
but are readable and writable during Program/Verify.
Only the Least Significant 4 bits of the user ID locations
are used for checksum calculations although each
location has 14 bits.
I'd recommend you to read The MPASM Help chapter relative to "__idlocs" ...

I will become obvious for you, then ... even if you have a "non µChip" programmer.

Alain