Adding IP addresses to IIS 7

I've rented a dedicated server with 5 ip addresses but i can only see one of them when selecting the IP address in the new website binding options.

I thought the: netsh http add iplisten ipaddress=xxx.xxx.xxx.xxx command would add those other IPs as options in the IIS Manager.

(i don't even know what that command does. I've read that that command makes the server "listen" to that ip)(if this is not what i want how can i revert that command?)

When i run ipconfig i only see the main one. IPs are PTR if that is important.

My objective is to install a different certificate for each one of those IPs and first i have to add them as option in the bindings.

How can i do that?

Can someone point me to a tutorial?

Thanks in advance.