Installing Drupal

I have tried installing this program several times and I keep coming up with the following errors in my index.php file:

Warning: main(includes/bootstrap.inc): failed to open stream: No such file or directory in /hsphere/local/home/geroge/media.org/index.php on line 12

Warning: main(): Failed opening 'includes/bootstrap.inc' for inclusion (include_path='.:/usr/local/lib/php') in /hsphere/local/home/geroge/media.org/index.php on line 12

Fatal error: Call to undefined function: drupal_page_header() in /hsphere/local/home/geroge/media.org/index.php on line 13

I have Apache 2 and Php 5 running on my (Windows XP) machine, and they work great. I also just installed MySQL this morning, and I think I did everything right, although I've never done this before so I'm kind of lost. (I have actually used quite a bit of SQL before, but always on machines on which it was already installed and configured before I got there). In attempting to install Drupal, I got as far as the part in the instructions that says:

At the MySQL prompt, enter following command:

Just got this error trying to install the current eCommerce package in Civicspace 0.8.1. Any ideas why the column might be missing from the db table?

user error: Unknown column 'is_recurring' in 'field list'
query: INSERT INTO _ycdems_ec_product (price, sku, hide_cart_link, ptype, nid, is_recurring) VALUES('12.00', '', '0', 'donate', '15', '0') in /var/www/ycdems/includes/database.mysql.inc on line 66.

Hello All,

I have a strange problem while installing the filestore2 and filemanager modules - when both modules are in the modues folder the list of modules (DRUPAL admin area) shows empty page!

If only one of the modules are unzipped in the modules folder the "modules" pages is shown correctly.

I checked the permissions of the newly created folders and the files - everithing is readable.

Hello Everyone,

Fatal error: Duplicate entry 'faa2e96c25d8d4925911304dfdd4a0de' for key 1 query: INSERT INTO sessions (sid, uid, hostname, timestamp) VALUES ('faa2e96c25d8d4925911304dfdd4a0de', 0, '83.25.108.38', 1123452050) in /mnt/storage/users/z/i/m/zimmer/includes/database.mysql.inc on line 66