Lineage 2:

1) In order to connect to our server, you need the Lineage 2 client. You can get that from here: Lineage 2 NCSoft Webste or FilePlanet

2) Now that you've done that, install the game. (You must auto-update your client using the Lineage 2.exe in your main Lineage 2 folder.)

3) Go to your C:\WINDOWS\system32\drivers\etc folder. Open the hosts file with notepad (using "other programs" from a list). Make your hosts file look like this (just copy and paste) and Save (not "Save As").
127.0.0.1 localhost
68.170.51.173 l2authd.lineage2.com

4) Register an account here.

5) You're ready to go! Start the l2.exe in your Lineage 2 System folder.