I know this is probably the most basic question possible to ask, but how the heckfar do I load any applications, ringers, themes to my blackberry from my pc? I have Device Manager 4.2.0.12 and dont know what the heckfar it does. There is no tab to load apps, or any freakin thing. My head is about to explode, please help.

BTW, specifically, I am trying to upload a theme that I have already downloaded and extracted to my desktop.

First calm down. No one around here wants to help someone with an attitude like yours. Clean up your post language or it will be deleted.

Use Application Loader, within Desktop Manager. Get latest version of Desktop Manager at BlackBerry Desktop Manager Downloads - BlackBerryFAQ

You want version 4.2, Service Pack 2

also make sure you have the plazmic theme reader installed or the theme wont work.