[CentOS] Question about CentOS 6 installation setup

When I created a CentOS VM (using VMWare WorkStation), I installed
with the first DVD, and the disk partitioning and installation was all
done automatically with almost no input required from me.

The problem with this is that the /boot partition was too small (under
50MB) and I couldn't update the kernel (it blew out with a grubby
error, which I did not recognize - separate thread on that).

Is this a manifestation of using VMWare for the VM platform, or is
this "normal" for a 6.0 installation or what?

Thanks in advance.