> My routes? What are these and how can I go about checking them?
You can check routing using netstat, this must give something like this (when ethernet (eth0) card is used):
# netstat -atr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
default you-gateway.her 0.0.0.0 UG 0 0 0 eth0
more on networking can be found using
http://www.google.com/search?q=linux+networking