How to use alternate key if one of the key on keyboard is not functioning

After heavy usage of particular key on laptop/desktop keyboard it may happen that perticular key like enter key may stop working, in this scenario we do not need to buy new keyboard just to avoid non functioning of single key. 
There are lot many free utilities available on net for free to avoid this problems. for example let us consider SharpKeys version 3 which will map one key to specific key. In my case Enter button/key is not working so i mapped 'Home' button to 'Enter' key by adding Home button in map this key (from key) list and 'enter' button in to this key (to Key) list --> click on ok button --> click on 'Write to Registry' button. 
Download from following locations:
SharpKeys 3.0          download
KeyTweak 2.3.0        download