go to IBM Passport Advantage with your Passport Advantage account and download the executable.
If you don't have a PA account, you will need to find someone in your organization who has the vendor relationship with IBM and download rights.
Some notes you are running Windows:
If you are physically at the server, you will see prompts that you will need to respond to. If not, then, when you start the executable the first time, you need to be logged onto the server 'at the console.' On a Windows machine, when you log on remotely, don't start Remote Desktop. Instead, choose Start > Run > type mstsc /console and hit OK. After you shut down Domino and upgrade the server, start the server by running nserver.exe. You shouldn't start it as a service the first time. You will get a UI prompt asking whether you want to start Domino as a service. Instead, start it as an Application. The console will appear. If your server is an Admin server, a prompt will appear asking whether you want to upgrade your names.nsf database. Answer y for Yes or n for No. The server will start. When it is clear that it is started properly, make sure that the server service is set to restart automatically and that you have other Windows service options set that you need, the restart the server as a Windows service.
If I don't take these steps, Domino ends up hanging while waiting for a response and the upgrade becomes very painful.
Also apply the 8.0.2 FP1 fixpack.