Installing VAC on your server is a very easy process, and can be achieved in a number of ways:
1. add -secure to your hlds target line which will initiate the module download automatically from speakeasy.net when you start the hlds session.
OR
2. navigate to your cstrike/liblist.gam file, and open it with an editor such as notepad. You'll see a line in there which will say "secure 0", change the 0 to a 1 to activate it, save the file, and start your server up. The server will then download the latest version of the modules to your server
1. add -secure to your hlds target line which will initiate the module download automatically from speakeasy.net when you start the hlds session.
OR
2. navigate to your cstrike/liblist.gam file, and open it with an editor such as notepad. You'll see a line in there which will say "secure 0", change the 0 to a 1 to activate it, save the file, and start your server up. The server will then download the latest version of the modules to your server