Don't know what you have previously read but here's how things operate.
Create folder \AutoPatcher
Download APUP. ZIP and extract it to the \AutoPatcher folder
Navigate to the \AutoPatcher folder and double-click on APUP.EXE
You will then be presented with a window listing the files/updates/patches/etc to be downloaded - put a check mark in the box/boxes you think appropriate, click Next, wait for the downloads to complete - could take over an hour depending on connection speed, click Finish when it appears.
(Some of these downloads are in languages other than English - select accordingly.)
Navigate to the \AutoPatcher folder and double-click the file AUTOPATCHER.EXE and wait to be presented with what could be a long list of updates/patches/upgrades/fixes/etc for your system.
Select those you want to install and clcik Next to allow AutoPatcher to install them. Follow instruction.