I recently purchased Vantec's NextStar external hard drive enclosure and I put in 200 GB HD in it. I bought this enclosure so that I could back-up my main PC. However, I now need back-up software. I plan to back-up the hard byte for byte so that I will have an indentical copy of the HD in my computer, in the enclosure. My question to you is, what program(s) would you recommend, (or what do you use yourself)? Pro's and Con's would be appreciated. Thanks.