Punctuation help, please.

[inalather]

Hi, this is my first post! I think the punctuation should be like this:

Bill said the site was "unique," and

and my brother insists it should be like this:

Bill said the site was "unique", and

I guess it just drives me crazy seeing the comma outside the quotation marks. Which punctuation is correct?
Thanks!

Deb

[KuaiLe]

I found this:

http://en.wikipedia.org/wiki/Quotation_mark

You may refer to the paragraph of "Punctuation" on this page for a detailed answer.