Arduino 1.0 new Serial commands

well i only want the bytes after the '!' byte.
i think the bigger issue is that when I run input something like '!0100~' i get a response of:
'1
1
2'
since the only serial.print commands are for the printing of available bytes, i think there may be some issue with the new serial commands, such as the serial.findUntil. i cant get it to work quite right