Hi there,
Try using Adaptec EasyCD Creator for burning ISO's. I'm afraid I've got a "it works fine so i'll leave it that way" attitude to burning CDs so i have'nt tried Nero or CloneCD even though I have them!
If you use the Data CD option, go to the File menu and choose create CD from image and change the file type from *.cif to *.iso and select your image file.
Hope this helps!