Changed “WordPress adress” – Site dosen’t work anymore (can’t get to “wp-admin”

No i have realy done something realy stupid and destroyd my hole website 🙁

On my website http://truemoneymaker.net , where WP was installed in the mail directory (/), i wanted to have a site before the WP site that redirected to the WP site, the reason for this is that i wanted to have a add that everyone had to see before they was redirected to the main page. But when i tried to make this work i did something very stupid;
I changed the WordPress adress (under Options – General) from http://truemoneymaker.net to http://truemoneymaker.net/index.htm (where i had the redirecting page with the add).

So now the site just dosen’t work, the mail site ( http://truemoneymaker.net ) look terrible and the admin area dosen’t work, so i can’t change the setting.

I have tried to add a copy of the “wp-admin” folder in a folder called “index.htm”, but it didn’t work 🙁

WTF should i do now? How can i get into my options and change the settings back?

Stupid as i am i dod not take any backup before messing with the settings, so if you can’t help me i am in big trouble.

Pleas help me, this site is realy importent for me.