you can make idm work for ever by just following below steps :
1.Download 'idm.zip' from [https://www.mediafire.com/?8myd79ayss1d6n6].
2.Extract the 'idm.zip' file.
3.(Replace) Copy idman.exe file to idm installed location on you PC ( normally 'C:\Program Files\Internet Download Manager' ).
4.Run 'RegKey Windows' file .
Now you can enjoy idm for ever......
Note: close idm completely before copy and replace , use task manager to close 'IDMan.exe'.