I'm definitely not a Calibre expert (I only use it for conversion, not library management), so hopefully someone will jump in with more help.
The best format to convert .doc to is .rtf; they're almost identical, except .rtf ("Rich Text Format") doesn't have Word's coding shortcuts, so the filesizes tend to be larger for anything that has substantial feature-use. Like page breaks.
I don't know why Calibre doesn't do .doc conversion; it's possible that the coding part of OpenOffice that do so aren't easily adapted to other programs. Microsoft doesn't like other programs being able to open .doc files, so they make them hard to translate.
I don't think Calibre will convert the existing files; they probably need to be removed and re-added. You can put some metadata in .doc & .rtf files; in Word, going to "File-->Properties" gets a menu with multiple tabs; the "Summary" tab will let you fill in title & author, and Calibre will import those (and if you convert to PDF, the converter should also keep those.)
I've heard very good things about PRS+, but have not tried it myself.
I don't think you can de-DRM ADE books without having ADE; I think the decrypter needs a file with a registration ID #, which is assigned when you download through ADE. (I cope with this by bypassing all DRM'd ebooks, including library books.)
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The best format to convert .doc to is .rtf; they're almost identical, except .rtf ("Rich Text Format") doesn't have Word's coding shortcuts, so the filesizes tend to be larger for anything that has substantial feature-use. Like page breaks.
I don't know why Calibre doesn't do .doc conversion; it's possible that the coding part of OpenOffice that do so aren't easily adapted to other programs. Microsoft doesn't like other programs being able to open .doc files, so they make them hard to translate.
I don't think Calibre will convert the existing files; they probably need to be removed and re-added. You can put some metadata in .doc & .rtf files; in Word, going to "File-->Properties" gets a menu with multiple tabs; the "Summary" tab will let you fill in title & author, and Calibre will import those (and if you convert to PDF, the converter should also keep those.)
I've heard very good things about PRS+, but have not tried it myself.
I don't think you can de-DRM ADE books without having ADE; I think the decrypter needs a file with a registration ID #, which is assigned when you download through ADE. (I cope with this by bypassing all DRM'd ebooks, including library books.)