Rock Band 2 question......

Hey guys.. Quick question: If i buy rock band 2 from Canada, can i download its DLC from the US store ?!

Is the US region same as tha Canadian region for PS3 games ??

I want to buy rock band 2 from Canada and download songs from the PS Store. I just want to make sure that this is going to work.. I know that if i buy the game from the UK, songs from the US store won't work... I want to make sure that US content from the store works with the canadian version.

Thanks :D

Do u guys know a good site that ships to the UK.? I want to import rock band 2 from the US or Canada to the UK... or at least any info on when the Full bundle is going to be available in the UK..