>>>This is really a shame:
>>>
>>>Open a command box. Copy a number of htm-files to a test folder. Copy the same files, but now give them the html extension. Then go to that test folder and type:
>>>

del *.htm

>>>What? Your html-files are gone also? I told you, it's a shame! And it happens with other extensions also. Who's gonna sue MS?
>>>
>>>Moreover, the deleted files are also not in the recycle bin. Remarkable.
>>>
>>>Now a question: who knows an undelete tool?
>>
>>Pater, that happens only for extentions that are 4 letter long. I suppose that this is because of 8.3 format of file name under DOS. About Undelete, just google it. There are many Undelete utilities over the INet.
>
>Berislav,
>It does not happen if no wildcard is used. Suppose there are two files 'effe.htm' and 'effe.html'. The command 'del effe.htm' will not erase 'effe.html'. So I think that 8.3 format is not the crux here. Moreover, I expect DOS to be aware of long filename format on my WinXP machine (it also happens on WinNT).
>
>Problem with all those utilities is that they cost money.

Maybe, but if you have *.htm and *.ht, del *.ht erases only ht files not htm. About utilities they all have trial versions. Till now I never used one (thanks God) so I can't tell you what is the best and what they can do.