It might be that the iso is corrupt. If not u can try this....
In CDRWIN, you could create a cue sheet, i am guessing that the sector size is 2048 so, open notepad, copy and paste the 4 lines under this paragraph, change the "[ISO NAME]" to what ever the iso is called. The save the notepad document e.g. cd.cue . It must have the .cue at the end. The simply load CDRWIN, click on record disc, load the cue file and burn. IF however the sector size is 2352, simple change the 2048 to 2352.
FILE â€œ[ISO NAME]â€ BINARY
TRACK 01 MODE1/2048
INDEX 01 00:00:00
If you are not sure of the sector size, use a program like IsoBuster or CDmage or even WinISO. All of these will tell you the sector size.
In Nero, FILE->BURN IMAGE then choose the iso u want to burn.
Hope that helps