Hey Foss, did you buy your PS3 in the US??? because I've been trying to find out if PES 2008 will run in an american PS3 (because of the regions thing). I wrote PLAYSTATION regarding about this topic and this is what they answered:
"Thank you for writing us. You will only be able to play DVD's coded "region 1" or "region ALL" coded in the NTSC format on theNorth American PLAYSTATION(R)3 computer entertainment system. Blu-ray Discs(TM) (BD) that are marked with the "region A" will be supported. *When playing PLAYSTATION(R)3 format software, a display/monitor that supports video playback at 60Hz is required. (Please contact the manufacturer of your display for video playback support.) In addition, the North American PLAYSTATION 3 system only supports a power supply of 120V AC, 60 Hz. Lastly, due to different television and voltage standards, and a variety of licensing issues, Sony Computer Entertainment Inc. (SCEI) has implemented a territorial-based distribution system for its hardware, peripherals, and software. This limits the use of any particular software to play on the console designated for that distribution territory (e.g. North American games will not play in the systems designed for other regions, such as, Japan, Europe, etc.). You may also experience problemsif you attempt to use memory sticks, controllers, etc. from a different region (outside of North America) on your North American console. In addition, we would not recommend traveling with your North American PLAYSTATION 3 system outside of North America. Due to a difference in international television and voltage standards, North American PLAYSTATION 3 systems may not be compatible for use outside of North America. We do not have any information on adapters or converters made to override territorial restrictions. The various PlayStation(R) consoles and format software titles are only designed to run in their respective regions and countries. We apologize for any inconvenience"