Thanks to both of you for your replies. I have the latest Nero version & tried uninstalling but no luck. I still only get the 'image recorder' option for burning. I used this to save an image to hdd, tried to then burn that using Nero Burning ROM/Nero Express with the same result, i.e. no option to burn to dvd or d: drive, etc. My drive model number does not display anywhere though Nero InfoTool gives lots of info on it. (The symbol [0:0] appears before D:\HL-... etc on top of the InfoTool window in the drop down menu if that's any help).
From doing other searches on the topic it appears as though Nero just won't recognise my drive model. From what I can gather I also have the most up to date drivers for it so it looks as though possibly buying a new drive is the best solution. Would an external drive work as well for dvd burning? May even go for a dual layer if I must go down this route.
Unless anyone has any more info on my particular drive or driver updates which might help with Nero? Thanks again for your time.