I’ve been wanting to try out a variety of O.S. choices on my Acer Aspire One. The best way to do this without removing your original instalation is repartitioning. Although I don’t intend to put XP on my Acer, the dual booting instructions on the JargonGeneration website are roughly the same.
In particular I fancy installing ‘Moblin 2.0‘ when it is finally released. I’ve got the BETA on a USB stick and it is pretty nice if missing a couple of features (I couldn’t find suspend and/or shutdown!)