Hi Menchar,
I'm not quite sure if I'm understanding you correctly. When using the InetFTPLogin command, you should be able to enter the domain name directly as the server name. For instance, you could enter "mysite.com" as my FTP server and add your username and password and you should be able to connect to your ftp server.
I'm not sure what version of CVI you are using, but there is an example program in both CVI 7.1 and 8.0 that shows the use of the InetFTP commands. It is under <CVI>\samples\internet\ftpcInt where <CVI> is the directory where CVI is installed.
If this example doesn't get you the information you need, just post back with further questions and I'll be glad to help you out.
Matt
National Instruments