Hi! Is there any utility or config screen for the MBP that I can use to empirically determine whether I'm connecting at 802.11a, b, g or n? My router doesn't report the connection type of the clients. And for the typical DSL modem/Router/wifi unit, does it only operate at ONE speed - the SLOWEST that ANY connected client can handle; e.g. with 3 802.11g Macs and 1 802.11b PC, the entire WiFi network will slow to 802.11b? Thanks!