True image backup

I want to back up my HD.

Can you tell me what is the difference between the version of True Image, and the "evaluation", which particularly interests me is to save power, the base of the HD (windows xp, drivers, programs, .. .)

Thank you in advance

The difference between these 2 versions is that of evaluation you can use only 30 days and pay all the time, indefinitely,
so if you do a backup on the 21/01/2009 and 01/03/09 you want to do a restaurant in theory it does not work! ! ! .

For information, to the "BACKUP" there are other free software .

For others: I did not understand how their system Control / shareware because if we create a bootable CD that runs Linux
I believe and we do backups and RESTO with this CD BOOT for backups and to control how the restoration of a partition to the extent that the HDD has been changed is how to control
from the BIOS? ? ? ? ? ? ? .

The control is perhaps from the bootable CD? ? ? With control the date in the BIOS? ? And maybe when you bought the license
must recreate the bootable CD and control of date? ? An idea? ?

Well, it is clear, I had a glimmer of hope of avoiding having to buy backup software
Can you advise me one, especially knowing that my basic Windows, Windows XP, drivers and programs I want to save. Doc, and others of the kind can be saved on my USB key.

Thank you for your reply