DEVICE=eth0:0
BOOTPROTO=static
IPADDR=87.xxxxx.93 <<I replaced this with my extra IP right?
NETMASK=255.255.255.0
ONBOOT=yes
GATEWAY=91.xxxxx.254

Now how can i save :/

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Added after 55 minutes:

Ok I got it working. Another question. Can I change the main IP's IP?