How to back up files from system encrypted hard drive?

Evening all,

I've got a new Dell Latitude which is used for business. I've encrypted the hard drive using Truecrypt. I've encrypted the entire drive, not just made an encrypted container.

My question is though, if I use the windows 7 backup and restore feature, and backup the hard drive to a NAS device, in the event of the laptop being stolen, or if I choose to work with files on another computer, will the files which windows 7 backs up work?

I work in IT, so have years of experience here, however encryption is something which I am only just learning.

If the windows 7 backup and restore feature will not support this, can anyone recommend an alternative? I've looked into Acronis True Image Home 2012, however still need to evaluate this.

Thanks in advance

Well, my company uses something called DataLocker. It's this encrypted drive that has a keypad on the outside unit, we have a lot of not very tech people that work at the firm, so requiring everybody go and install encryption software could get... Messy. Anyways, yeah, so no downloading stuff, just type in the password and the computer recognizes it as a normal hard drive.

Good Luck!