Hi Wibbly,
The CD format that the Amiga computer actually uses is called ISSO 9660. I have personally found that the Nero burning software SUCKS!!!! The Adaptec software does a much better job at burning Amiga CD-Rs. Use the Adaptec software on Windows 98 Second Edition (Windows XP SUCKS). Set the parameters to ISSO 9660 with Long File Names turned on. Also, the default settings in Adaptec's DirectCD works very well for burning Amiga CD-Rs. This is what I use and it works perfectly every time. I have sold a lot of my custom made Amiga CDs on eBay, so I do know what I am talking about. Enjoy. :-D