I love my Nokia N8, and when I first got it I was really frustrated because I could not share my Internet connection with my laptop. iPhone has this option, but I could not find it in my N8. That's when I decided to look for a solution and I found the best N8 app in this case: JoikuSpot. 

This is a nice free app that allows you to share your internet connection with other devices. The free version does not have many features, but if you decide to get the full version of it, you will get cool features like WPA protection and user management. I've used it and it's amazing. Just search "JokuSpot" in Google.