bootcamp 2.0 question

[phone.modem]

I'm now using 10.5.1.
BC 2.0 says:
"Bootcamp assistant cannot be used.
you must update your system software before using this setup assistant."
I totally have no idea about this freaking information.
I've tried my best to get my mbp uptodate but it still...

my mbp is c2d 2.16G
what kind of software should I install???

 

[hockeysc23]

I also am having this problem ... are there any solutions?