Permalinks again

I’m new to WordPress. I’ve setup a new site and want to activate pretty permalinks in my site.
Problem is every time i set it to custom with the /%postname% or http://www.guymoving.co.il/%postname%
I get the pretty permalinks on the page name but the page I get is the main page.
I know this subject was talked about a million times but couldn’t find a solution.
My site is hosted on IIS7 platform.
Every time I set the pretty permalinks i get notified that the web.config file wasn’t updated and I have to update it manually which I did (not sure I did it right).
PLEASE help me get rid of those number in my page’s names.