Integration with Taxonomy

Hi,
I'm currently playing around with the beta3 version of the module.
I have set up a trigger on adding a new node, with a few basic conditions and they work fine.
So I started trying to get some custom php conditions working and have hit a wall.

I have a taxonomy term on my node and want to do stuff based on its value.. What seems to be happening is the node save (rule) is kicking in before the save of the taxonomy terms because its blank when i view the node afterwards. I could be doing this completly the wrong have a look :

$external = db_result(db_query("SELECT count(*) FROM {term_node} WHERE nid = '%d' and tid = '%d'", $node->nid, 45));
if ($external > 0){
return 1;
}
else{
return 0;
}

Thanks
Keith