[Ginxeng]

The plugin way

#include <sourcemod>  
public OnMapStart()  
{  
    ServerCommand("hostname 

 YOUR SERVER NAME GOES HERE");  
}  
public Plugin:myinfo =
{
 name = "Autoexec Server Name",
 author = "GinXeng",
 description = "Exec Server name or some shit like that",
 version = SOURCEMOD_VERSION,
 url = "http://www.pcgametime.com"
};