1. You save the pics to your hard disk
2. You open imageshack.us and you browse trough your disk to find the pic and press host it
3. Then you click on "Copy" on the first option where it reads "Post your image on message boards!"
4. Then you paste it on your message
Hope it helps
As for the 7 I think we´ll have to wait and see cause you can´t really see how it will turn out yet. But I really like the current one so I hope they won´t change it that much