1. Stop messing with the registry. At this point you might want to consider a system restore.
2. What kind of drive is this that you speak of?
Today i have just got a new drive because the old one broke. I had, had a problem before where icons in my jump list go funny but i assumed it was something to do with a registry file i ran early that week. I plugged my new drive in and changed some of the folder icons on it and the optimize folder preferences. It was all A.O.K until i unplugged my drive from my computer. I went to my MSN jumplist and all of the 'Tasks' had a document icon next to them. I have posted a picture on my website but you will have to use this link because it isnt on the nav bar http://sites.google.com/site/pcreapers/computer-help As you can see in the picture all of the 'task' links have a document sign next to them. I really need help with this or even if you have had the same problem post it here... Thank you so much for any help that anyone can give it will be greatly appreciated.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic