In WordPress 2.7.x you can easily update your application directly from the admin area. When a new version is available, you will see a notification in the WP admin area.
Before you proceed with the upgrade, we strongly advise you to make a backup of your WordPress. When you are ready, click Please update now to proceed with the upgrade.
On the next page you can choose whether to upgrade automatically or manually.
Click Upgrade Automatically 
If everything goes smoothly, your WordPress will be successfully upgraded.
You’ve got a great blog there keep it up. I’ll be watching out for most posts.
Nicely, another blogger previously posted a subject like this.