Instead of struggling with a right-handed mouse, left-handed people should use one such as this instead. While most computer mice have two buttons (and maybe a scroll wheel), this
From OnBuy
Hama Vertical, Ergonomic "EMC-500L" Left-handed Mouse, Cabled, Black
Conrad Electronic
Hama Ergonomic mouse USB Optical Black 6 Buttons 1000 dpi, 1400 dpi, 1800 dpi Ergonomic