when you originally sign up for hosting and purchase a domain name, the name servers you will be point to would most likely be something like...
ns1.computinghost.com and ns2.computinghost.com. custiom name servers will allow you to use your own domain name instead of computinghost.com (ns.yourdomain.com).
this is a good option because when people do a whois search to see who you are, it looks more professional and legitimate rather than having your name servers point to another companies domain.
the didicated ip is good because you are sharing your ip with every other website on the server you are hosted on. if certain ip's are banned on a server, having a dedicated ip would prtect you. it also protects against spam and such. if you are in business, a dedicated ip is the way to go. also, there are some services on the web you cannot use without a dedicated ip.
advanced dns, i am not too sure about. you should write a support ticket and ask them directly what the advantages are. i'm assuming you just have more control over your dns account than you normally would and possibly less time to propogate when you change your dns settings(sometimes it takes 2 days for your changes to occur).
FouGilang, on Nov 26 2009, 04:06 AM, said:
i'm planning to take yearly billing cycle , so dedicated ip cost me more $29 yearly, it will take more time to get

anyway, how are those two works? you haven't explained what are those feature for .___.