First, Thanks for u all for answering my previous post and clearing my doubt.

Now i hav another problem i hav locked my files in windows 98 by using ALT and numbers.But anyone else can open it by going do DOS prompt and using edit or some othe command without using the key i had given. One of my collegue open it without using the ALT key.How can i do that?Hoping u guys will help me out

Thanks in advance