Following are some further tips on how to connect via (i) FTP, via (ii) Site Admin Panel, and via (iii) FrontPage:

(i) Connect Via An FTP Program:
IP # or Server Address = http://www.yourdomain.com  
User Name = admin@yourdomain.com (use the full user name in the format given here)
Password = please see your welcome email entitled "important information"

Once you are logged in to your site via an FTP program, double click on mainwebsite_html directory. This is the short cut to the actual directory for your web pages i.e. /var/www/html/. Any pages uploaded to /var/www/html/ directory will be visible on the Internet. Remember to replace the current index.html page with your own index.html page so that your pages can be seen on the Internet. For an excellent ftp program, we highly recommend LeapFTP. You can download LeapFTP program free ny clicking here. After you have installed LeapFTP, simply enter your info (as given above) and login to your hosting account. When you login via LeapFtp, you will see the mainwebsite_html directory. Click on this directory and it will take you to /var/www/html/. Now upload your pages to this directory. Please be sure to replace current index.html with your own index.html page so that your pages can be visible on the Internet. Please make sure that the index.html or index.htm pages are named in lower case only. 

(ii) Login to Site Control Panel:
Please note for uploading your web site, we recommend to do it via LeapFTP or the ftp program of your choice. For Web Site Control Panel, your login name is "admin" (under login name, enter admin only) and the password is the exact same as your ftp password. When you go to your web site control panel, simply type your domain name and add /admin e.g. www.yourdomainname.com/admin . This will take you to the login screen. Use the following to login to your web site control panel: 

First goto http://www.yourdomainname.com/admin (change yourdomainname with your own domain name)

Login = admin 
Domain = yourdomainname.com 
password = same as your ftp password

(iii) Connecting Via FrontPage: 
If you have Microsoft Front Page extensions installed on your hosting you can upload your web pages using Microsoft FrontPage 2000 or above.  For FrontPage, your 

User name = admin
password = same as your ftp password

PS: Please note that for ftp you have to use your full user name i.e. admin@yourdomain.com however for site control panel or for frontpage use only "admin" as your login name.  Thank you!