There's nothing wrong with writing up your answer that solves your exact problem by deriving from other answers.

You should make it clear in your answer that AZ's information was important to your success. This will credit his work and is a tip for those of us voting that you guys solved this together as a team and will encourage us to vote you both up. So I would just mark yours as the answer and then give the guy an upvote.

Here's an example of how I did it when I ran into this:

How can I cache NFS shares on a local disk?

(Note that you should edit your question to include a link so that we can vote on it as well!)

There's nothing wrong with writing up your answer that solves your exact problem by deriving from other answers.

You should make it clear in your answer that AZ's information was important to your success. This will credit his work and is a tip for those of us voting that you guys solved this together as a team and will encourage us to vote you both up. So I would just mark yours as the answer and then give the guy an upvote.

Here's an example of how I did it when I ran into this:

How can I cache NFS shares on a local disk?

(Note that you should edit your question to include a link so that we can vote on it as well!)