Edit Unattended.txt

What entries do i need to perform an unattended install using winnt32 that will format or remove the the boot option leftover from win98 when going to win 2000 pro. What appears as a dual boot system is in fact just a leftover which does not work. it’s like the boot ini file is corrupt. If i try to go to win 2000 pro it works properly but i would like to get rid of the option to go to win98.