How to resume Internet Download Manager downloads after format ?

How to resume Internet Download Manager downloads after format ? And dont lose passwords for webpages downloads?

To save webpage passwords, etch I use Firefox, and there is a proggy called Mozbackup, it save everything with your browser. To resume IDM, when I reinstall I always save off the download folder to another drive (USB, etc), so I can resume later. Hope that helps.

The above message will not be of any use. Coz i've tried it long ago.
I'm still looking 4 a perfect solution to it. I too was dwnlding a file of 1.05 GB with IDM and paused at 63%. But after formatting it is not working. I've even tried to backup the "IDM internal Data" = "C:\Users\'Username'\AppData\Roaming\IDM\". But it doesn't work too!!