"Any way to restore original Win 2k settings? I don't have any registry backups."

You could format and reinstall? Seems drastic, but those who don't backup and install software not designed for some OS tend to get to do this.
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Try this:

Press Start, Run, SENDTO and click ok. You can edit and delete sendto items there.

http://support.microsoft.com/?scid=191882 notes the older OS's but apparently works in 2000 as well.

Bob