In a message dated 11/23/2005 10:54:03 A.M. Mountain Standard Time, joshua@hutchinson.net writes: It looks like eBookwise uses the .imp format, which is somewhat similar to .oeb format, but isn't quite the same. More of a subset, maybe? (I may be misunderstanding that part) I just got this from the eBookwise site, which sells only books to use on its reader. Fictionwise sells .rbs, which will work on eBook readers. So yes, it is IMP, but it seems to be saying that it is OEBFF and IMP. 4 Reader Ratings: Great Good OK Poor Available eBook Formats [Secure - _What's this?_ (http://www.ebookwise.com/servlet/mw;jsessionid=-QjhwDRmwPCcLqmB23BUrkGQkDY?t=help_eBook-Formats-FAQ&si=43 ) ]: OEBFF Format (IMP) [1.8 MB] All formats: Printing DISABLED, Read-aloud DISABLED Blackmask now calls this format EB-1150. I dunno. All I care about is, can I read this book on equipment I have without having to sit at my desk to do it. Anne