Installation snag:failed to open stream...

Hello,all!
I'm trying to install drupal-6.13 (the same thing with 6.12 6.10, see below)
onto localhost.
I've strictly followed installation instruction, and what I get finally?
When I point browser to http://localhost
(i.e., Apache's DOCUMENT_ROOT,where drupal resides) I see the message:
"Warning:include_once(include/install.inc):failed to open stream:
No such file or directory in /usr/local/www/apache22/data/includes/database.inc"

The thing is that this script cannot work AT ALL, because the construction
"include_once" takes relative path (relatively current directory) as an argument,
althow the path relative drupal root (the same as Apache's DOCUMENT_ROOT
in my case) is implyed,
and directory "includes" does not contain one more subdirectory "includes". So, the script
/usr/local/www/apache22/data/includes/database.inc
is trying to find non-existent file, and this is hard-coded into database.inc.
This is obviously a fatal PHP error in installation script.
And this is not the single example of error of this kind.

Could anyone tell me, how it ever possible to install drupal 6.x??