where can I find digital files for Douay-Rheims family bible?

Answer 1

The following website can be used to search for keywords. You need to click on the version of the bible you wish to get answers.

http://bible.crosswalk.com/

Answer 2

You should have just Googled it. I did and found this web site: http://www.drbo.org/

You can download the text from Project Gutenberg, as well:
http://www.gutenberg.org/etext/1581

Probably other places, too. It's in the public domain, so anyone can post it without worrying about copyright.