[Sarge] Newbie: Could not get Network work

[choral]

I have tried to play with ifconfig to be able to ping gateway. Have tried to configure resolv.conf but no chance to get it works. I am not sure how to configure /etc/network/interface
Could anyone please guide me to the right direction? below is my /etc/network/interfaces

auto lo
ifcae lo inet loopback

#The primary network interface
auto eth0
iface eth0 inet dhcp

iface dsl-provider inet ppp
provider dsl-provider
#please do not modify the following line
pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf

[iwanabeguru]

try from gui
applications -> system ->network

[choral]

I am using KDE and yet install knetworkconf ... which means i cant configure via GUI.. neway, i have resolved my problem by using route
route eth0 default gw <gateway>
appreciate for your reply