Hi idana,
Acronis Trueimage Echo workstation will do what you require. It is my personal preferred system for backup and imaging. I use it for my workstations and server (server version) and also promote and sell to clients.
The add-in module 'Universal Restore' allows you to perform a bare metal restore to disimilar hardware. This is acomplished by driver injection when you re-image to a new PC.
The Universal Restore (UR) option need not be bought initially. If your PC should fail and you decide to replace rather than repair you can buy the UR module to then perform your restore to new hardware.
You have the additional benefit of being able to convert your TrueImage backups to Virtual disks compatible with VMWare, MS Virtual PC and parallels, so in a worst case DR situation you could even get up and running in a virtual machine whilst waiting for your new hardware to arrive.
Website for further info -
http://www.acronis.com/enterprise/products/ATICW/A trial version is available for download - give it a try.
Cheers
Kevin