WordPress MU

http://wordpress.org/extend/plugins/wordpress-mu-sitewide-tags

I have enabled it and then when I go to a page I created I have something like <?php query_posts('author=54&showposts=1'); ?>

and it doesn't seem to be showing up...

Do I have to add some code into my page or someting? something else?

I have mysite.com/showblogs - this is the php page that i added

then i have users like -

mysite.com/user1

mysite.com/user2

The theme I am using doesn't have a home.php..

ok I created a home.php and i also have tags.. the blog title from the other users blogs show up...

But when i use

<?php query_posts('author=54&showposts=1'); ?>

The author doesn't show or connect at all...