can't open default report builder page

Hi All,
I am trying to open the report builder. I can't seem to find a menu item or
any other way to get into it. I am guessing it is in the
http://servername/reportserver page?
I have everything setup as far as I can tell. I have been working in the
visual studio creating reports. I deployed my project, but I can't get the
http://servername/reportserver" page to open.
I get this error:
An internal error occurred on the report server. See the error log for more
details. (rsInternalError) Get Online Help
File does not exist.
Can someone please tell me what file does not exsist' Also I dont know
which error log this is talking about.
TIA,
JoeI had the wrong name of the page.