Well the group doesn't look too tough: Paraguay (can turn on the style), Trinidad and Tobago (know very little apart from that they are some African country) and Sweden (only real threat IMO). Shouldn't have too much problem there in group stage.
However, how many times have we seen England outplayed by lesser teams which we should've crushed? What usually happens is that attack just doesn't do much (Crouch is nothing more than someone you want on corners as he's tall, I don't have much faith in his technical ability, he looks rather awkward on the ball) and we start to sit back and just get bodies in the box. At this point I feel like punching the walls as we can't even get out of our own half. People like Owen just stand there and get swarned by 4 defenders when balls get kicked up the field (he's not exactly the powerful forward who muscles with defenders but at least his aerial ability seemed to have improved).
What we need is another forward with him just like Rooney who battles with defenders, who runs forward and isn't scared to have a tussle. I can't see Crouch doing that at all. Defoe and Bent might put up a fight but they aren't exactly strong. Someone like Heskey (but who can actually shoot) would be perfect but I just can't see anyone who's like that at all (apart from Rooney). My image of England squad seemed to have changed lately from a team that's capable of winning cups but that's just unlucky to a team that's actually may not be that good.