The vote was 361-54, and the Senate is expected to override too.
This bill has broad bipartisan support, and big spender Bush vetoed it because he is having to pretend that he gives a damn about the budget to reinforce his own delusions of manhood.
Why this is significant is because once he is overridden, it will become progressively easier for it to happen in the future.
There are already reports that there is an S-Chip bill that will get a veto proof majority in the works. It gets much harder for the Republicans to whip the vote when they have already helped override a veto.