Hey,
Setting your console to different contry settings isn't too hard.
All you need to do is make a new PSN, Set the country, Hop to Google Maps, Get an address, type that in, Fill in a load of bogus info and HEY PRESTO! You've got a foreign PSN Account. I use this basicly for online play, For going on US and JAP servers mostly
I haven't tried the store with it though, As I like to keep my paid stuff on my UK