sql group by statement

Hello,
I have a problem, which I'm not able to solve with a simple query :

I need a resultset with distinct id's, but the max val2 of each id.
I tried to group by id, but though I need the pk in my resultset
I have to group it too, which "destroys" the group of val2.

Can this be done without a huge query ?

Table :
pk   id   val1 val21    1    2   32    1    2   43    2    1   14    1    0   55    2    1   8

Needed Result :
pk   id   val1 val24    1    0   55    2    1   8

Thx
berger