Help with dummy file

[Tan7d]

I just d/l sportjam ,it is a 703Mb nero boot image file.The problem that i have is that my burner "Yamam 6x4x16" has a problem and it cant write cds more than ~350 Mb (If i try to copy a bigger file i have a following track error{it is a hardware error} ).I notice that the actual size of the game is no more than 200Mb then i understand that is the dummy file that filing that differce.(I also see that with nero image drive: dummy.dat 467MB).So I have only to solution ,or buy /fixed a cdRw drive or reduce the dummy file.And i want to tell me how can i reduce it or even if i can remake the cd without it (even not bootable cd ,i have utopia)