Here are some settings in case you need these.

IP Address: "Server Assigned"
Subnet Mask: "255.255.255.0"
Gateway Add: "0.0.0.0"

Network	Primary DNS	Secondary DNS
qw	4.2.2.1	4.2.2.2
uu	198.6.1.218	198.6.100.218
st & fi	216.126.128.40	216.126.136.250

Listed below are some links to some walk-throughs of Mac's made available on other ISP's websites. Perhaps these can help.

IMAC - Configuration