In terms of specs, the Acer Aspire One Softpedia used packs an Intel Atom N450 processor running at 1.66GHz and 1GB of RAM, with an HDD of 320GB. 2Gb should be just enough for the lxde desktop environment and iceweasel to function. Running the live distro will give you an idea of how the system will run with that cpu and modest ram.
