Godaisies,
The example code is for reference only as alchymyth pointed out, you need to create a template page specific to your theme structure. this would need to be a template page modified index.php, or mix of page.php and index.php if you want a page text section as well.
can you find the file page.php and index.php and copy the contents of these to pastebin, then you may get some help that matches your theme.
I have something like this for the twenty ten theme, and you can see it is different for each theme.
This one might be better for you, as all you do is have a page and category slug that match, code
I use it on my website page here, where the page and category slugs are both 'templates', and has both page text and posts.
If you pastebin the two files so we can have a look, will be a good start.
David