Retrieve old posts?

Wondering if someone can point me in the right direction here..

I have a blog I am self hosting..

I also have an unrelated database backed up on my PC from an old domain I used to own.

I am trying to retrieve an old post from that domain and use only that one post on my new website.

Is there any way to get an old post/html markup from an old database that doesnt have a host?

thanks in advance!