[CentOS] Partition alignment

I'll be setting up a vSphere 4 environment hosting CentOS 5.4 on Netapp
FAS and was curious how you guys are handling the automation of
partition alignment within your linux guests.  I'd like to use cobbler
for dynamically creating kickstart scripts and wasn't sure if I could
align my disk during install some how.  Are there kickstart arguments to
force the alignment on a 4k boundary?  Have any of you had to do this?
Thanks.