depends which PS3 mate. i have the very first one (the best) 60gb, all card slots etc etc, supports ps2 etc. and that plays all regions.
but my missus, has a white jap one and that won't play all regions, only our region, as theres is the same. and i THINK all the uk ps3's after mine, might not be multi region (40/80/120gb no card slots or ps2 support, brushed silver look)