first recommendation -- use v3, not v2. Second, do you have a PCI bus? Either way, start with dbe62 or alix1c, which both had soldered-on parts, not socketed memory.
Why v3? I continue to prefer it, because it's just a lot better code base and it gets better every week. Jordan and Marc will probably disagree with me; if so, trust them, not me :-)
For v2, others can tell you the best port, but it's probably the dbe62.
Ignore the olpc stuff, it's old and musty.
thanks
ron