2 Shdw-Knt: the application by itself doesn't convert/generate anything
As I describe it's just GUI for JavaLoader/rapc utilities (both are in the archive). All files (7 files: bb.ico, BB_Manager.exe, ICSharpCode.SharpZipLib.dll, JavaLoader.exe, net_rim_api.jar, rapc.exe, rapc.jar) should be located in the same folder from you run BB_Manager.exe. To check the posible issues with:
1. Connection - run DOS promt, in the folder run command:
JavaLoader -usb deviceinfo
if connection OK you will have Hardware Id,PIN,OS Version and etc. of your BB.
2. Convertion JAR/JAD - run DOS promt, in the folder run command:
rapc import=net_rim_api.jar codename=Test -midlet test.jar
where test.jar - any JAR file by your choice, if it has JAD file add
jad=test.jad
to command. If convertion OK you will have COD file.
Hope this brief info will help you.