How To Setup Internet Download Manager(IDM) For Rapidshare ?
1) Open up your IDM and click on 'Option' button.
2) Select 'Sites Logins' tab.
3) Add the bottom of this tab, you'll see a "New" button. Click on it to enter the URL of the site(rapidshare), username and password. Select 'http' not 'ftp' from the drop-down list. Click OK and you're done.
That's it!!! You can download the RS files using IDM.