Create a file named "terms.txt" in addons/sourcemod/configs.
 Put your terms in that file, and save it (see down).
Example terms.txt file:
Before playing on this server
you have to agree to these terms:
- Do not cheat
- Do not swear
- Obey the admins
The plugin is untested, because I'm at my "bad" computer, which doesn't have CSS, or any other source mod.
Everyone that helped me at #sourcemod.
Extra big thanks to BAILOPAN.
If you have 1.0, you HAVE to update to 1.1. There was a bug, and I changed the menu system to panels.
Updated with CloseHandle(hFile)