I'm new under Amahi HDA, and previously I was running under Freenas. I had to left this NAS system because of hardware uncompatibility

I'm now trying Amahi, and I was wondering if it's possible to run this OS system headless, and access it only with the http://hda or http://setup (without vnc or other king of remote controler) and also the windwos xp explorer for the shared files.
If not, what is the advantage using a remote controle???
Other question:
I have some problem to understand the way files are shared into the hda.
I know how to create a new folder to be shared, but I don't know on witch part of ths free space it's located???
I explain what I want to do:
I have in my hda, I disk of 30Gb for the OS system, and 2 500Gb disks for the Data. I would like to be able to see those last 2 drives under my windwos explorer as 2 network drives.
Can some one explain me how to do this.
thanks in advance
regards