falcon's eye doesnt work on my computer =/
running winXP
If i click the nethack.exe nothing happens

Had the same problem (also running XP)...don't know if it was because I retried nethack.exe a few times or because I renamed the app folder "nethack", but it began working consistently afterwards...

Version 3.31 is the latest build available through sourceforge or the website given as a homepage and download location.

The application homepage does mention a possibility of using version 3.40 of nethack with some effort.
TO QUOTE: " NetHack 3.4.0 has been released! This means that the next version of Falcon's Eye (in development) will be based on NetHack 3.4.0.

Note: you may able to use even the current version of Falcon's Eye with NetHack 3.4.0. This may require minor additions to NetHack 3.4.0 source files. Look through the 3.3.1-based source code distribution of NetHack - Falcon's Eye, find the Falcon's Eye specific parts and add them into the 3.4.0 code. A more in-depth explanation may appear here later."

+1 for Gadren:
Nobody uses Falcons Eye nowadays, its outdated.
Use Vulture - http://www.darkarts.co.za/vulture/about - instead its in development still in 2011!

+1 for Gadren & Markus: Vulture is now v2.6.3 (last updated on 2012-10-27, according to https://bitbucket.org/clivecrous/vulture), and has downloads for Linux and MacOS, as well as for Windows.

Note: the "Buy Now" button at http://www.darkarts.co.za/vulture is nothing but a donations honeypot; Vulture is Open Source and files are freely downloadable...