If it's the phone lock then with no sim card fitted try entering *2767*2878#
It should then come up with e2p reset (or similar). Wait 10 secs or so ... it should then reboot with the phone lock back to it's default of 8 zero's.
One warning though ... you will probably lose some info/settings from the phone. Not sure what exactly, but if you've got no other option .....
Julian.
January 2008