..I have norton commander 5 on a diskette for such cases.what I do:
1)in BIOS,set boot from cd.insert win98 cd,save and exit
2)select: run the pc from cd (or something like that,I dont have an english version of win),do not launch win98 setup,only run the pc with the help of the cd
3)you should end in the dos prompt.now insert the nc5 diskette,and run nc5 (mine is b:\nc5\nc)
4)you will be in the norton commander.really easy to modify,delete or add stuff here.do the changes you want,and restart the pc (remove the cd and the diskette first)..
if you dont have such a nc5 diskette,you can get it
here (just extract the archive to a diskette.its not a full nc5,just a small part you need)..