How can you assign file types to an application?

[kevinmac56]

I am trying to download epub files using a internet server application from calibre. I am able to access the server but when I try to download epub files I get error "This content is not supported on this phone" I have both Nook and Moon+ Ereader installed but need to assign the epub file type to them.

 

[Richardo Crispus]

-Holder-
( I want to know this too )

Richardo