I'm new with 2010, I used to work with MS Office 2003 and having trouble with Word 2010 paragraph spacing setup as default. I'm doing a lot of cut/paste from web pages, so in my document, I set the Paste default to plain text (except for paste from the same document, which I used Keep source formatting), this didn't work, so I tried to change the default in my style, and to my surprise, it was grayed out. How can I set a default in style in Word 2010?

Here's my environment:
- Windows 8.1 64 bits
- MS Office 2010 64 bits
- Lenovo G500 i3-3110M

When I opened up style window, I saw lot of styles in there, lot of them has (web) in it, I tried a few of them and all of them are grayed out.

1) How can I set/change the default if the Set as default option is grayed out?
2) How can I delete those "extra styles" in my style list?

In my document I have bullet list, and when I tried to modify a style, it removed most of the numbered bullets, where in the style can I set/keep the numbered bullet?

Thanks for your help/comment.
Michael