How do I make firefox open multiple tabs when the program starts?

Question:Essentially I want to have two home pages set, one in each tab. Is it possible? This answer makes it sound like it can be done:
http://answers.yahoo.com/question/index;...
But I can't figure out how you might get two tabs to open with different pages on startup. Any ideas?

Answers:
THis is actually pretty easy, just do this:

put a | in between different websites, each represents your different homepages.

For Example: www.gmail.com | www.mozilla.com | www.answers.yahoo.com

Notice how that straight line is in-between each site.
>That line is located if you hold "shift" and press the back-slash button, located just above the enter key, below the backspace key. (Back-Slash is \ ).

If you still can't find it, just copy and paste the lines I made above.