linpus: moving /home to different partition?

hallo,
I'm trying to setup a dual boot (linpus/xp) acer one 150, so I prepared different partitions and I want to share /dev/sda3 beetween the two sistems, respectively mounted as /home and D: (I'm going to use ext3 and http://www.fs-driver.org/).
a part that I'm not yet able to dual boot, as pointed out in this thread http://www.aspireoneuser.com/forum/viewtopic.php?f=47&t=8944&start=150,
I noticed that inlinpus /home is mounted through a weird system, I can't just mount the device by fstab, because it's mounted somewhere else, with a strange filesystem, and not in fstab, where?

My question are:
what's this filesystem? why to use it?
how to stop mounting /home that way to let me do it with fstab as standard ext3?
thank you.
a.