FreeNAS on ESXi - how to access disks?

I have an HP N40L Microserver just purchased and so far on a single disk (just to test) have done the following:

1. installed bare-metal VMware ESXi on USB flash
2. created the ESXi datastore on it's default settings (full disk)
3. created a new FreeBSD 64bit VM with 2GB virtual disk (as per the FreeNAS minimum install requirements)
4. Installed FreeNAS 8 from the ISO to the above VM

I can access the web GUI for FreeNAS but cannot add volumes/disks as the physical...

FreeNAS on ESXi - how to access disks?