using hypre through petsc

[Matt Funk]

Hi,

i am trying to use boomeramg from hypre in petsc. What i am doing right now is 
simply do:

m_ierr = PCSetType(m_pc,PCHYPRE);//CHKERRQ(ierr)
m_ierr = PCHYPRESetType(m_pc,"boomeramg");

then i do my kspsetup etc...

i was wondering what other things i need to configure/set to properly use the 
hypre preconditioner with petsc. This is new to me, so i am not really 
experienced with this (that is using external packages through petsc). Also, 
these are the only hypre calls i found in the manual pages. 

Maybe somebody with more experience can share some of their wisdom ..., or 
point to a place where i can read up on it?


thanks
mat