ok i bought the game and it is fun. Unfortunatly it is not as realistic as the 360 and ps3 versions. There is a season mode though. It a pretty good game, like the controls work good but i wish it was more realistic. O ye and you mite not like the ratings of the players on your favorite team. I am enjoying the game though.
I expected to be disappointed by NBA Live 08. I own NBA Live 07 for the original Xbox and it's a solid title, though NBA 2K7 was vastly better (I still play that).
Unfortunately, it appears unlikely that Sega is going to release a version of NBA 2k8 for the Wii (at least, I haven't heard of one), although their website seems to leave a small door open for that as a surprise announcement. But they are only picturing boxes for other platforms -- not a good sign.
So, right now, it appears that a quality basketball simulation is out of reach for me for the upcoming season, I would have to go out and buy an Xbox 360 or PS3, which is not going to happen right now, barring a[nother] big price drop.
They do have NBA 2k8 for the PS2, so I might be tempted to go out and pick one of those up.