So, I've looked around these forums a bit, but couldn't find anything on this, so I hope I'm not bringing up something that has already been discussed.

Has anyone made any stats for Eldar starships?

In the scenario I'm running with my group right now, they're going to be dealing with some Eldar, specifically Ulthyr Ellarion (from the Creatures Anathema), and this could result in a nasty space battle, for which I'd like some stats for an eldar ship, including whatever weaponry they use. If anyone has any of those, or can point me in the direction of where I can find them, that'd be great. If not, mayhaps any advice on what to do should I write them myself would be helpful.

I made some rules ages back on the Dark Reign main site for Dark Eldar vessels, but otherwise, no, I don't think anyone has.

I suggest you build them from the raider class ships - give them ghost fields, augmented retro-thrusters and then lance weaponry (if you can fit it). For normal Eldar you might add solar sails as well.