I understand that a newly minted drow (LA +2) sorcerer will have an ECL of 3, meaning that for XP purposes he is treated as being level 3. Thus he will require a total of 6,000 XP to gain his second level of sorcerer, just as a human sorcerer would require a total of 6,000 XP to advance from level 3 to level 4. (Please correct me if this is not the case.)
My question is, would the drow character begin play with 3,000 XP, the minimum required for a 3rd-level character, or would he begin with 0 XP as normal characters do? In other words, how much of an XP "debt" does LA +2 represent?