everything you put in is correct, its just that they should be arranged something like this
Code:
subnet 192.168.0.0 netmask 255.255.255.0 {
range dynamic-bootp 192.168.0.10 192.168.0.250;
option subnet-mask 255.255.255.0;
default-lease-time 86400;
max-lease-time 604800;
get-lease-hostnames true;
}
notice that the options for that paticular subnet are in brackets "{}"