HRESULT lookup tool

There is a useful tool HRPlus for those who works with Microsoft COM. This tool can lookup HRESULTs. You can lookup different codes in binaries, also you can create a new own codes:

How to: djvu and kindle

There are a lot of ways to perform DJVU to PDF converting. I have investigated a lot of them(online tools, pdf-printers and standalone tools) - and all of them were awful(bad speed, bad quality, shareware, etc.). But recently i've found a nice tool, which performs necessary converting better then others:

1. Go to djvu.sourceforge.net
2. Download binary package(in example my target platform is Windows)
3. Use ddjvu.exe tool, for convertation f.e.:
    C:\Program Files (x86)\DjVuZone\DjVuLibre>ddjvu -format=pdf book.djvu book.pdf