Can someone explain to me how to setup multiple online stores to other countries. I would like to download the demos, movies etc. from other stores that's not in the PSN USA store. THANKS

The Japan store is the only difficult one. You can find directions online for that, or just memorize what page is what.

1) Create a new user.
2) Create a new PSN main account (need to have a different email and PSN username)
3) Change your location to whatever country/region you need access to. I have a Japanese account (Japan), Asian (Hong Kong), Europe (UK), and Australian.
4) Enter an address of a location in that country.

That should be it. I'm wondering if there is a Korean PSN store, because I saw on play-asia.com that there are some PS3 games in Korean. If so, I wonder if they get different stuff from the Asia and Japan PSN stores.

great, thanks

I wound up finding a Japanese address online that had each line translated so I knew what order to put the address in. The PS3 Japanese account instructions I found didn't work.