Make sure ASE is set to 1.
# ASE
# Required: No
# Purpose: Defines whether the server should report to the All Seeing Eye (can be seen in the Server Browser)
# Format - ASE
# Notes:
# Set to 1 to enable, anything else to disable
ASE 1
Go to C:\Program\MTA San Andreas\server\mods\race open the file mtaserver
Find
# Admin
# Required: No
# Purpose: Defines all the people in-server who can rcon_login to admin
# Format - Admin
# Notes:
# admin-level must not go above 5
# Names and passwords are case sensitive
#Admin Default password 5
add Admin "your nick here" "your pass here" 5 but without the "".
So it will look something like this.
# Admin
# Required: No
# Purpose: Defines all the people in-server who can rcon_login to admin
# Format - Admin
# Notes:
# admin-level must not go above 5
# Names and passwords are case sensitive
#Admin Default password 5
Admin "your nick here" "your pass here" 5
write rcon_login password to login in as admin in the console or /rcon_login password in the chat. Write rcon help in the console (F8) to see available commands.
Get this http://forum.mtavc.com/viewtopic.php?t=15552 if you want commands like !stats and stuff.