Disc encryption backup and restore

I would like Comodo Disk Encryption to use on my laptop which has an operating system of Windows XP.
For my backups I have been using a Seagate Free Agent Pro external drive which includes a USB 2.0 & eSATA interface module.
Is the COMODO Disk Encryption 1.2.65021.129 the best solution at this time?
I would like to have my laptop encrypted.
Please advise me which is the best way to make backups and restores between my encrypted laptop and the external hard drive.