Access a module from another section

I need to access a module from another section of the code.

How do I include the module?

I imagine it's a require_once line, just not sure how.

Thanks!

please elaborate.....

I am modifying short_profile_info.php.

And actually, all I need to include is the database functions of dolphin to read some information from 2 tables I have in a join statement.

I am not THAT strong in php and classes and the like so, I really don't understand how to require/include BxDolTwigModule.db so I can access the database functions

I need to 

if (verifyTable("modzzz_mood_main"))

and

 $aMood = $MySql->getRow("SELECT mm.`member_id`, mm.`mood_id`, mm.`message`, UNIX_TIMESTAMP(mm.`changed`) as `changed`, sm.`category`, sm.`title`, sm.`icon` FROM `modzzz_mood_main` mm, `modzzz_mood_moods` sm WHERE sm.id = mm.`mood_id` AND `member_id`={$iMemberID} ORDER BY `changed` DESC LIMIT 1");

I have bx_import('BxDolTwigModuleDb');

thanks!!!

Nevermind, I figured it out.  Apparently I need to spend some time watching some iTunes classes on PHP classes and objects!