I received a sony ereader PRS-900bc as a gift and would like to order books through borders and other sites. I have sony reader library which is supposedly compatible with adobe digital editions. I downloaded digital editions and was initially able to see the reader when I opened digital editions, but I had a problem with the reader being seen in sony reader library, so I called Sony customer service and they had to deactivate and reactivate both my reader and my computer, now I am unable to see my reader under digital editions. The people at Sony told me I can only buy books from the reader store and not any other sites because they are not compatible, I told them that other sites (Borders and Barnes and Noble) both are ePub files, so I should be able to download. Do I need to redownload Adobe digital editions or do something else?