Front fog light replacement

Hi all, complete newbie here, just bought an A4, 2.4, 2005, convertible which is just amazing, I absolutely love it, what a drive (my last car was a mini cooper!)  I have no idea if its a B6  B7, I can't see anything on the V5, how can I tell?

Anyway, the front fog light lens on the drivers side has smashed, I wanted to replace it with a replacement part, not fussed about it being a genuine Audi product as the car isn't really used that much.  I cannot for the life of me find anything on eBay that is the definitive replacement part, they all seem to say they are from the same model but they all have different fittings.  Can anyone point me in the right direction of what might be the right part to get?

I would really appreciate any responses.

Thanks

Scott