Ok, it is working fine now, I mounted hda1 giving just the device, so that it read from /etc/fstab, and mounted it on /media/hda1.
I tried to create a folder as a normal user, and it worked, I am also downloading files with Bittorrent to hda1 with no trouble.

I removed the "noauto" option, and it works, hda1 is mounted automatically at the startup.

And, yes, I can now mount hda1 as a normal user


I really appreciate your help, thank you very much ^___^