Chipping a PS3 & playing PS2 games on a PS3

1-how and or where can I chip my PS3 in Nairobi?
2-Further, I have a US-REGION (NTSC) PS3…how do I play games from other regions (PAL based) on it…it refuses to play any PS-2 games I buy from the streets in Nairobi (and I have assumed this is because they are PAL UK based since I thought PS3 is backward compatible)

Following

Kwa mchinku hapo stage ya embassava, building with blue glass, 1st floor, ps2 games @80 bob. All gaming accessories plus ps2 and ps3 chipping utapata pale @ very affordable price, 4gb sandisk = 350, 1tb transend = 6k

ama ufike ronga where ps2 and ps3 is big biz huwezi pita shop tatu bila kuona biz ya gaming

There’s this place @nairobilay aliambilia wasee hapa awhile back but can’t remember it. Wacha atatuambia tena