[Norck]

I'm not sure that i understand you, but:
If you wanna to use your skin only if you are logged in as RCON admin:

Код:

//Under OnPlayerSpawn
if(IsPlayerAdmin(playerid))//If you are logged in as RCON
{
  SetPlayerSkin(playerid,ID);//Put your skin ID here
}

And if you want use your skin only as normal (not RCON) admin:

Код:

//Under OnPlayerSpawn
if(gTeam[playerid] == TEAM_ADMIN)//If you are an admin
{
  SetPlayerSkin(playerid,ID);//Put your skin ID here
}

Anyway, let me know if this isn't what do you need