Digital Copies Help/Discussion

[Geologist]

I posted this in the Newbie forum as I couldn't figure out where to find the best experts on this subject. I am not a newbie to computers and technology but I would love to have some input and opinions regarding the use of the digital copies that are included in various films. First some basic info:

1) We are a Windows household (PCs running 2000, XP, Vista, and 7)
2) I have about 10 digital codes from various films.
3) We do NOT have Ipods, IPhones, IPads, etc.
4) I do have a Nokia N97 Mini which is capable of playing video content.

I ask Windows or ITunes versions as I am concerned about having backups of the digital copy. I have heard that people were able to reintall the digital copy via ITunes after a system failure - I am not sure how this would work in Windows. Also would the Windows version allow me to view on multiple machines/devices? I would assume ITunes would.

Secondly, is there any quality difference in the two versions? I wouldn't think so, but thought I would ask.



***AGAIN***

Any input, experiences, ideas, etc would be greatly appreciated.

Thanks