Cool email tool

I am attempting to transfer me email address book from MSN to Yahoo. I am having difficulties. I am entering my msn email address and password. your system says it is unable, is there any other way i can do this? Can you help me?

I have imported from my outlook book twice by mistake. Plus there are many additions in yahoo, so i cant delete all and import again.

I want to send email invitations to all my contacts in friendster, and I want to do it at once using a special email tool, that’s why I need to have a list of all their email addresses directly. I don’t want to PM each friend and ask them what his/her email address is. That would be too tough as I have more than 300 contacts. Is there a way to view their email addresses in the friendster page itself?

Will I need to cut and paste email addresses in a contact list?

I know I have seen a directory somewhere actually a tool bar with a link to look up someones email address. I have an email address of someone but part of if is so faint I can’t read it. I need to email them but I waisting alot of time trying to find their address. Thanks for the help!
I can tell they have an aol address.

In other words, how do I set up an email address to use for receiving Yahoo! Auctions notifications, Yahoo! Groups emails, special offers and marketing communications, and Yahoo! Calendar reminders?