few question about url rewriting ...

first the url option is when (file based (fancy) ) the url is like this:

http://www.pundemo.org/topic1-READ-DELE … TE%21.html

whats up with all the %21%21 etc ... can this be fixed

second when the urls are submitted to google search engine ... does it dublicate urls which make google to delete that ...

like

http://www.pundemo.org/topic1-READ-DELE … TE%21.html

http://www.pundemo.org/topic1.html

http://www.pundemo.org/topic/1/

http://www.pundemo.org/viewtopic.php?id=1

3rd question is when you change the url rewriting options in admin area ... does it change the ATOM and RSS to that type

THanks