I went on battle.net and clicked on the windows etc

It downloaded and everything, but after it was downloaded the normal D2 installer showed up, the one that requires the disc.


Whyyyyy

Take a peek at this guide, it should explain everything
http://forums.d2jsp.org/topic.php?t=21032460&f=34

Does anybody know why I try to play the D2 I downloaded and I click on battlenet and it says

Patching cannot be completed because the patch archive is corrupt

File Name: D2XP_IX86_112a_113c.mpq

If you are unable to correct this problem please contact Blizzard Tech Support.

I uninstalled and reinstalled.

What does this mean, ughhhhhhhhhhh

Running Diablo 2 as administrator should solve the problem.

What do you mean "Run as administrator"

Right click on your Diablo 2 shortcut Properities Compatibility Tab Here you can select to always run this .exe as administrator
This will give you more right which are needed to install the patch correctly.

You are the best!!!!!!!!