eth0 not staying configured

[Jim Herrmann]

I bought my wife a new motherboard for Mother's Day (get it? ;-) ), and 
upgraded her from Mandrake 9.0 to 9.1.  I have everything working fine, 
except that the network doesn't remain configured.  I can configure it 
with the Mandrake tools once it's booted, and everything works great.  
Upon reboot, which my wife does daily as she like to shutdown at night, 
the network configuration is lost again, and I have to go through 
network setup again. 

Suggestions on what I should look at and what configuration files might 
be involved that Mandrake is not writing out properly.  Any help would 
be appreciated.  And yes, I know, I'm too damned dependent on those GUI 
tools.  :-)

Thanks,
Jim