For assistance in deciding how a Kobold Sorceror would work in Eberron, there is no better source that the
holy word of Hellcow. Okay where it counts, the Kobold is a halfway decent choice to play, especially considering the cosmopolitian nature of Eberron. Plenty of goblinoids all over the place as a permenant underclass... monstorious mercenaries of Dorram (Ogre labourers, Troll shock troops, Gnoll archers)... a kobold doesn't seem too out of place. In fact, I'm playing a Kobold Artificer!

Even though the party had a pair of gnomes (one was a cleric that disappeared, the other is a bard that my character is a bit chummy with), the real antagonism is with the Seren Barbarian without an appretiation for the finer points of magical power.
![Devious :] :]](http://www.enworld.org/forum/images/smilies/devious.png)
See if your DM will give you the Daylight Adaption feat for free, mine did since Kobolds are gimped enough as it is already.
Elves are also a great choice in Eberron. Specificly, you can be a Valenar elf, and have an ancestor patron that typifies nearly any concept that you want. After all, not all Valenar elves are double-scimicar-weilding-Ranger maniacs, of course. If you want additional help in constructing you Valenar Sorceror, check out, once more,
the holy word of Hellcow. Aerenal is not the best culture source for a Sorceror, since they're even more likely to be a Wizard than a Sorceror. Still, it isn't that its an
unworkable concept.
Of course, you can still be a elven Sorceror... but then you'll need to be either associated with a nation, or the Dragonmarked House, or make a concept all on your own without cultural support.
Then, there's always the dependable Human, in multiple Dragonmarked House flavours, or plain nation-attached flavour. Both have excellent possibilities on their own.
And that's all I have to say on the subject... for now anyways.