Outlook 2007 and Yahoo! mail

I have configured Outlook 2007 with my Yahoo! mail account, but it isn't working. I followed the steps provided by Yahoo! and I can't import my contacts or send email. I tried to send a message and a box came up saying "Enter Network Password" All the information is right and I clicked OK but the box just comes back up. Please help me, I know it's probably some stupid little thing I need to do to fix it, but I don't know what it is.

Sherry

Also, the error message says


Task 'RSS Feeds' reported error (0x84104005) : 'Synchronization to RSS Feed: (TechSpot won't let me post links) has failed. Outlook cannot process the RSS content from (TechSpot wont let me post links). The link may not point to a valid RSS source.'