First post and I'm tech-challenged so please be gentle

I'm travelling to Chile (incl. Easter Island) and Peru (incl. the jungle) next month, and am trying to figure out if I can set up my BB to use as a GPS device. I've verified with Rogers I can roam there, but don't know what I'd need to buy/install for GPS.

(I did search but didn't find anything directly helpful; hence the post here.)

Thanks in advance for any advice..