Advanced Poll 2.0 problem, please help

I didn't really know how to get to the admin page on this poll system, the readme's tell you nothing on how to do that.

I went to admin/index.php and am getting this error:

Fatal error: Call to undefined function: no_cache_header() in www\poll\admin\index.php on line 151

the install went fine, but i dont really know how to run this.
I installed the php/mysql one. (the one in the db folder)

also, in the textfile based readme, it has:

2. Goto the admin page -> http://www.yourdomain.com/poll/admin.php
Username: admin
Password: poll

it should really be:
http://www.yourdomain.com/poll/admin/admin.php

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If anybody can help me out, then please do.
This is the best poll system i can find and i really want to actually use it.

AIM: pavilionex
YIM: pavilionex
MSN: pavilion@attbi.com
E-mail: pavilion@attbi.com

thanks.
-pavilion