Thread: I honestly have no idea where to start, please help.

Wrong section, dear new user.
Actually, lack of knowledge.
You can not use original software with maps & lycs from non-official sources.
So, do some search, and you will find for example
[Only registered and activated users can see links. ]
I hope, that your device is not like NX304, which is Linux based. In that case, you have no luck.

P.S. Read forum rules, follow my signatures.

P.P.S. I will move this thread later to proper section.

sorry about the wrong section. The clarion NX404 should be wince based, am I supposed to install it from my system, or do I just throw them onto the SD, removing my old files? My current SD contains a Navigation folder on the root the one you linked is RTNavi. The app is Navigation.exe in my original SD. If it's just throwing them onto the SD, do the files need to be renamed to match my old SD contents?
Is the rest just grabbing the maps, poi's, language,etc I want and piecing them together in my content folder?
Thank you.