For uploading pictures on here you really are best off using Photobucket.
Link (free to join & use): http://s273.photobucket.com/
Guide on how to post Photobucket pictures on here: http://www.350z-uk.com/topic/53047-how-to-post-pictures-via-photobucket/
Usually the locking wheel nut keys are specific to the set you have so you really need to know the set you have to source a replacement in most cases.
If you need a new set of locking wheel nuts &/or key then there are traders on here that may be able to help you out. Like Mitz@the Cougar Store or Chris@ Tarmac Sportz.
Do you have anything in the cars history like a receipt for the locking wheel nuts or old packaging? If you do it may tell you a serial number for the key in order to get the correct replacement.
Not a lot of help I know sorry but it's something. I'd try a PM to Mitz at the Cougar Store to see if he can advise you better.