If the technical hurdles of mods and streaming are too high, the best way to enjoy the "San Andreas feel" is to play the official titles designed for the hardware:
On your PSP, go to and select "Connect via Private Network." Your PSP screen will now mirror your PS3. how to play gta san andreas on psp link
For those with a tech-savvy edge, you can use your PSP as a client to stream the PC version of San Andreas. This requires a homebrew application called . How to set it up: If the technical hurdles of mods and streaming
Link the two via a USB cable (this provides the lowest latency). Run GTA: San Andreas on your PC in windowed mode. How to set it up: Link the two
Connect your PSP to your PC. Copy the ISO or the modded game files into the ISO or PSP/GAME folder on your Memory Stick.