I have released the first beta of BAE today. It only includes the monster viewer. It's ready for 3rd party testing and I ask anyone with the time to test it out on your r_info.txt and monster.txt files, which can be found in the MAngband source tarball under lib/game, or in any single-player Angband variant's lib/edit folder.
You WILL need Microsoft's .net framework which is approximately 20mb. Modem users >28.8 can expect this to take around 1 hour, 40 minutes unless they're playing Mangband. And I know some of you play for way more than that on modems

Some people have reported trouble with http://www.windowsupdate.com so Maegdae, would you post the location of that .net package you found please?