set fixed IP with PPoE

Hi all

I'm about to set up a m0n0wall box with PPPoE VDSL Internet access. On 
the WebGUI, if I choose PPPoE for the WAN interface, but  I can't enter 
my static IP, the netmask and the default gateway.

If I set only the username and password for PPPoE, I get a dynamic IP 
from my provider. But I received a /29 range from my provider, which I 
have to set manually. Is there a way to set a IP address manually on the 
m0no0all in connection with PPPoE?

Thanks
Beat