recently I have a problem with attaching a file to Yahoo mail with IE 6 (win
XP)
At trying get error message "Invalid File Specified. Please try again."
I have uninstalled yahoo reloaded windows and re-installed yahoo but still
have the same problem

Could anyone inform me what I did wrong and how to correct this?
I am a novice with computers

Jack,

I was also getting an "Invalid File Specified" error when using IE6 and
Yahoo mail, and trying to attach a file.

Try this: open Internet Explorer, in the menu bar click on Tools, then
select Internet Options. In the Internet Options, click on the Security tab,
select Medium for the Internet, and then click on Default.

I did this and I can now attach files again.