PS3 Online Regional Questions

• J(PS3) in the US to (U)PS3 in the US.
• J(PS3) in Japan to (U)PS3 in Japan
• J(PS3) in the US to (U)PS3 in Japan.
• J(PS3) in Japan to (U)PS3 in the US

1. Only be able to access Japanese online features if the system is in the US?
2. (U)PSP to (J)PS3 Remote access. Will it work?
3. Home feature conflict?
4. Will the (J)PS3-Online-Account person be able to have a buddy in their buddy list thing to a person that owns a (U)PS3-Online-Account?

The PSN you connect to will depend on the country your account is set to- if you use a US address, you will get the US PlayStation Store. It won't matter which version PS3 you actually get.

As for online play, that is determined by what version game you get. Most have their servers set by the region the game is mant for. A Region 1 Motorstorm, for example, will get you playing against players from North America. Very few games have actual global servers. Your friends can be worldwide, you just may not be able to play them in most games if from another country.

OK so what if I get a US PS3 gave a US address. Then I just happen to move to Japan.

-Will I be able to update my address to a Japanese address?
  -If I can then am I only be able to access Japanese PSN stuff?

I still need to know about the PSP to PS3 if there will be an issue.
Lets say I get a US-PS3 and go to Japan and have a Japanese Address on my account. I have a US-PSP. Will I be able to play downloaded PSX games on my PSP from the Japanese PSN?