1. The Cnet networking forum writes how such filters are ineffective. There is no security gain here. Only more failures for owners.
2. Since you didn't give the mac address (no I will not always capitalize mac) I can't see if there is a typo.
I have just purchased a dell studio 15 laptop.My internet router has mac address filtering enabled.I am not able to connect to wireless internet as the router is not accepting my mac address.It says the mac address is invalid...Please help..Thanks