what is their phone number please

Hi everyone!   I just bought a new Dell E6420. While I was installing the computer with Windows 7 (in Sysprep mode), I played a little bit with the "Dell Data Protection - Access" software. Out of nowhere, it put an "Admin" password for the bios while booting. Problem is, when the computer is in sysprep mode, the end-user don't know the "Administrator" password, so I don't know the password that was put in the bios.   I searched the net and heard about the "Master Bios Password", so I called Dell to have it. Problem is, it don't works!   My service tag look like : XXXXXXX-1D3B They gave me a very long password, with numbers, letters (caps and non-caps). Is tehre any think special I must do to enter this password? Like ussing the "key pad" with the FN key to enter the password? Must I press a special ombinaison of some keys to reset the password? Dell is supposed to send me a new motherboard, but I would prefer to have my computer working today. I can't wait 4 days for that.   Thanks again for your time!