[CentOS] setting up CentOS 5 with Raid10

I would like to set up CentOS on 4 SATA hard drives that I would like to 
configure in RAID10.  I read somewhere that Raid10 support is in the 
latest kernel, but I can't seem to get anaconda to let me create it.  I 
only see raid 0, 1, 5, and 6. 

Even when I tried to set up raid5 or raid1, it would not let me put the 
/boot partition on it, and I though that this was now possible. 

Is it possible for me to set up the configuration I'm looking for?

Russ