No, James is correct, it will fit, if burned properly, with a few meg to spare. It would be best if you could give us all the details of what you are doing, You are not using any option to make the CD bootable, are you? Give us your exact file size and step by step what you are doing in Nero and we'll likely be able to identify where you are going wrong.

Also, in NERO, bring up the main window and before you try to burn the CD, select RECORDER in the top menu and then select DISC INFO in the sub-menu. Tell us what it says the capacity of your media is in the pop-up nformation window. Second line, MB value to the far right.