aligning.., aligning navigation links. Options

[krystala]

I would greatly appreciate it if anyone can help me.

Okay, so I'm in the making of an xanga & well I have the tag that gives me a box around my entries.
I've plugged in the tag for my custom navigation links & I also plugged it in so that the links should be centered. The custom navigation links that I plugged at the top in the box that is around my entries. When I viewed to see my changes the navigation links I plugged in were not centered in the box around my xanga entries.

My date & entries seem to not be affected, but everything before it is. =\

Here's my Under Construction xanga site:
My Xanga Site

[krystala]

MY CODE FOR MY CUSTOM NAVIGATION LINKS:

<center>[<a href="http://www.xanga.com/Private/SubscribeTo.aspx?user=threadedxloose">Subscribe to me</a>] [<a href="http://www.xanga.com/private/home.aspx">Xanga Home</a>] [<a href="http://www.xanga.com/CLAF/default.asp">Look&Feel</a>] [<a href="http://www.xanga.com/private/subscriptions.aspx">Subscriptions</a>]
</center>

THIS IS THE CODE I'VE USED FOR THE BOX AROUND MY ENTRIES, I DON'T KNOW MUCH, BUT I THINK IT'S SOMETHING ABOUT MY BOX THAT MAKES MY LINKS, ETC. NOT CENTERED, BECAUSE EVERYTHING ELSE LIKE MY ENTRIES FOLLOW WHAT I'VE PLUGGED IN

<div style="width:400px;
BACKGROUND-COLOR: #ffffff;
background-image: url(imageurlhere.gif); background-attachment: fixed;
repeat: no-repeat;
FILTER: alpha(opacity=99);
border: 1px solid #000000;
height: 100%;
position:static;
margin-top:0">