Windows 7: Any ideas for a good left handed mouse?

I want to buy a new wireless mouse. Is there one that can function on a black glass surface? I thought i heard about some logitech alternative to microsofts blue track is it? I think i found what im looking for "Logitech MX 610 left handed" but i can't find any retailers in poland or through pricerunner.co.uk

Why bother with specific left handed ones.. Just pick a decent mouse and alter its button function in Control Panel..