Hi Randy,
I’m not entirely sure what modifications your webmaster has done upon your site. If you want to upgrade JA Mendozite Template, you can do so using our JA Extension Manager component. However, you need to check in:
<blockquote>Admin area->Component->JA Extension Manager</blockquote>
and fill in account for “JoomlArt Updater Service” (Click on edit link of JoomlArt Updater Service on JAEM, you will see the form to enter your account credentials on JoomlArt)
Make sure you back-up your site before doing upgrades.
Also, it would be helpful to have a look at our userguider – JA Mendozite Template here