Can’T login to wordpress admin theme..

So I just assigned my new website nerdorgeek.com a .com address for my wordpress theme.
After assigning it I am now unable to login correctly and change the admin panel to post my posts and articles. How do I fix this, I’m thinking it’s the redirecting the url for my website.
My question is this:
How would I go about changing my url http://ec2-184-73-20-247.compute-1.amazonaws.com/wordpress/
to
http://ec2-184-73-20-247.compute-1.amazonaws.com
and still display
http://ec2-184-73-20-247.compute-1.amazonaws.com/wordpress/
so I would be able to display
nerdorgeek.com
properly..
phew.
http://wiki.bitnami.org/Applications/BitNami_Wordpress_Stack#How_to_change_the_default_URL.3f So I read my documentation, but I still don’t know how to do this. What do I do still. This process is very unclear still to me.
Answer #1
To answer your first question, you would need to set /wordpress as your home directory for the site, or have installed wordpress in the base directory.
Second question, you need to configure your nameservers for your domain name, which I already told you…
Answer #2
U shd be able to login via,
http://site.com/wp-admin/