Hotfile.com is another file hosting service like Rapidshare, Megaupload etc. You can share big files easily and securely.configured your download manager, IDM so that file from hotfile link can be downloaded using IDM. 

Never login to Hotfile directly using  Premium Account Info

Here's tutorial on how to configure IDM for Hofile :-

Step1:

Open IDM then go to  Downloads -> Option

Step2:

Then Go to "Sites Logins" and click "NEW" button ( on the bottom left).

Step3:

Under server/path (choose http) , type : hotfile.com, then use your user name and password that You just got.put your hotfile premium account info like username and password.

Step4:

Done. Now you can download hotfile links, You just copy the link to IDM.

This is how to do it, open IDM -> add url -> ok

Never login to Hotfile directly using  Premium Account Info

Hope this tutorial will help you...