This is a new DBOY frontend which I don't really know much about, but I'm pretty sure it's not a trojan. Version .7b is the first version to have mouse support. It's written entirely in Quick Basic and has a keyboard interface. This is postcardware. The author will give you the registered version if you send him a postcard.
More info is in the documentation.
It supports all the options except the ones for changing background and sprite colors and swapping buttons and autofire. Nothing you'll suffer from anyway, heh. This frontend gives you easy navigation among your gameboy roms and it supports all of VGBs command line options. Put it in the same directory as vgba16.exe vgba8.exe and your roms. Includes support for Game Genie support.