I don't know if you have got your problem sorted yet, Thelis, but if you put "connect Error 1460" unto Google you can read more complaints about it.
I think it's something to do with having the correct numbers in the POP and SMTP places. Open Outlook Express, then Tools, Accounts, Properties, Advanced and check that the required numbers are correct for the Yahoo web site.
The Yahoo web site should tell you which POP and SMTP numbers you should use.
Hope this helps.