Switching databases in the middle of a script

[minorgod]

I'm writing a plugin that will access both the vBulletin db and a different database on the same server. I've gotten it working with the second db by using the standard mysql functions, but I'm trying to clean it up so that it uses only the vBulletin db functions. My question is, can I do this in my plugin to change my selected DB and then change back to the vbulletin db:

	//select the alternate db
	$this->dbobject->select_db($wp_db_name);
     
	//create the table if necessarry
	$query="CREATE TABLE IF NOT EXISTS `".$wp_table_prefix."vbulletin_mappings` (`wp_post_id` INT NOT NULL ,`vb_thread_id` INT NOT NULL) CHARACTER SET = latin1;";
	$this->dbobject->query_write($query);


	//add some stuff to the new table....
	//imagine that there's some kind of insert query here

	//then switch back to the original vb db
	$this->dbobject->select_db($vb_db_name);

	//add the rest of my vb sql stuff here

Also, if someone could tell me the proper vBulletin config variable names for the vBulletin db name/username/password vars, that would be nice. I don't know if I should access them from the global $config array or if there's an $vbulletin->config array I should be accessing instead. Thanks in advance. (And yes, this is yet another Wordpress-vBulletin integration I'm working on).

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