how to get remote machine IPadress/Hostname

Hi all,

Please help me how to get remote computer IPaddress/Hostname.I tried with system.dns.gethostname and gethostentry but all are returning only local machine addreess.
So please help me to get below info.
How to get remote computer IPaddress/Hostname by accepting either on the one as Input parametes?

I need info like the below methods

1.

GetRemoteHostAdress(string IPaddress)
 { 
return hostname , FullyQualified machine name 
 } 

2.

GetRemoteIPAdress(string HostName){ 
return Ipaddress , Fully Qualified MAchine Name 
} 

I request every one to help me.

Thanks

Tags: C# (C# 2.0), Visual Basic