$users_connected = mssql_num_rows( mssql_query("SELECT memb___id FROM MEMB_STAT WHERE ConnectStat = '1'") );
$record = mssql_fetch_row( mssql_query("SELECT Record FROM Record") );
if($users_connected > $record[0]){
mssql_query("UPDATE Record SET [Record]='$users_connected'");
}

echo $record[0];

CREATE TABLE [dbo].[Record] (
   [Record] [int] null
) ON [PRIMARY]