WP Backup/Restore Plug-in for 1.2.x (Again!)

Searched the forums, but no luck.
I gonna install WP 1.5, but need to make a backup of my posts.
So i downloaded the Wp Backup/Restore plug-in for WordPress 1.2.x.. In the instructions it says i gotta edit the “wp-admin/menu.txt” file.. However, there is only a “menu.php” file. However, in the Read Me file it is written:

Edit wp-admin/menu.txt and find this line:
3 users.php Users
Add this line right after it:
5 backupRestore.php Backup/Restore

But there are no such line.. It’s looking like this:

$menu = array(
array(__(‘Write’), 1, ‘post.php’),
array(__(‘Edit’), 1, ‘edit.php’),
array(__(‘Categories’), 3, ‘categories.php’),
array(__(‘Links’), 5, ‘link-manager.php’),
array(__(‘Users’), 3, ‘users.php’),
array(__(‘Options’), 6, ‘options-general.php’),
array(__(‘Plugins’), 8, ‘plugins.php’),
array(__(‘Templates’), 4, ‘templates.php’),
array(__(‘Upload’), get_settings(‘fileupload_minlevel’), ‘upload.php’),
array(__(‘Profile’), 0, ‘profile.php’)

So what are my best choices here? (i’m a designer and not THAT technical)..

Thanks!