Editing Internal POI of Garmin C550

[pnbalaji]

Hi,

Is there any way to modify the internal POI data of Garmin C550. We have a super walmart here at Dodgeville, but its address in incorrect in the garmin's POI. Is there any way to fix it?

I don't wanna create a custom POI for this walmart.

One more question. If I create a custom POI for walmart, I want the unit to search for walmart in both internal and custom POI and yield the result. Is there a way to achieve this?

Thanks,
Balaji.