<a href="http://dualis.1emulation.com/" target="_blank" >Mic</a> has released a new version of what is probably the best Nintendo DS emulator for Windows at this time, heres whats new in this release:
MMU: Added support for new IPC format (memory tab, IPC version, v2)
MMU: Fixed incorrect size for VRAM bank I
MMU: Fixed accesses to VRAM bank I while in LCDC mode
MMU: Mirrored RTC data to new IPC location (0x23FFxxx)
GPU: Added support for extended OBJ palettes
GPU: Added support for extended 1D character OBJ mapping
GPU: Added support for OBJ vertical flipping
GPU: Fixed a bug where screen offsets would be doubled
GUI: Added VRAM bank I to the palette viewer
GUI: Layers can now be enabled/disabled on a per-core basis