Upgrading Drupal

Hi All,
I had used the date module in Drupal 6 for my custom module.But in Drupal 7, i am getting this error
Fatal error: Call to undefined function date_popup_load() in C:\xampp\htdocs\widgetcorp\sites\all\modules\freeway\freeway.admin.inc on line 164
This is the form iam using it in is as follows

<?php

function create_freeway_project (){
$node = node_load(arg(1));
$form = array();
//i am making the popup_load call here and this is the line 164 .
date_popup_load();

$form['title'] = array(
'#type' => 'textfield',
'#title' => t('Project Description'),
'#size' => 60,
'#maxlength' => 128,
'#required' => TRUE,
);

$form['custRef'] = array(
'#type' => 'textfield',
'#title' => t('Customer Reference'),
'#size' => 60,
'#maxlength' => 128,
'#required' => TRUE,
);

$form['poRef'] = array(
'#type' => 'textfield',
'#title' => t('PO Reference'),
'#size' => 60,
'#maxlength' => 128,
'#required' => TRUE,
);

$form['splinst'] = array(
'#type' => 'textarea',
'#title' => t('Special Instructions'),
'#size' => 60,
'#maxlength' => 128,
'#required' => TRUE,
);

$form['strtdate'] = array(
'#type' => 'date_popup',
'#title' => t('Delivery Date'),
'#size' => 60,
'#maxlength' => 128,
'#required' => TRUE,
);

$form['enddate'] = array(

Forgive me, I'm new at this...

I want to install the Front module,
http://drupal.org/project/front

but I get a couple error messages.

Just upgraded Drupal core from 7.10 to 7.12. I followed the UPGRADE.txt information, and all modules were up to date prior to the upgrade.

My homepage is working correctly, but I can't navigate to any admin page. When I try, I get this error message:
Fatal error: Cannot instantiate abstract class DatabaseSchema in /homepages/28/d394521835/htdocs/includes/database/database.inc on line 890

Hi everyone,

i ran a big update on my site (core 7.0 -> 7.12), and updated all the menu, following the update.txt procedure. Everythink was OK, but i got these problems on Review Update in the update.php

I have a live site on a remote linux box.
Its using drupal 6.2 and I want to upgrade to version 7.x.
I am testing the upgrade on a windows pc using xampp.
When I run update.php I am getting the following php error:
"[04-Mar-2012 11:54:06] PHP Fatal error: require_once() [function.require]: Failed opening required 'C:\xampp\htdocs\shirlie7/includes/database/mysqli/database.inc' (include_path='.;C:\xampp\php\PEAR') in C:\xampp\htdocs\shirlie7\includes\database\database.inc on line 1669
"
So it is mixing windows and linux path conventions.

How do I work around this?

Details (in case required)
I have changed settings.php db setup info on my pc from:
$db_url = 'mysqli://root@localhost/shirliedb';
to
$databases['default']['default'] = array(
'driver' => 'mysqli',
'database' => 'shirliedb',
'username' => 'root',
'host' => 'localhost',
);

I have also added following to httpd-vhost.conf on my pc:
NameVirtualHost 127.0.0.1:80

DocumentRoot C:/xampp/htdocs/
ServerName localhost

DocumentRoot "C:\xampp\htdocs\shirlie7"
ServerName shirlie7.local

CustomLog "C:\xampp\htdocs\shirlie7\logs\shirlie7.local.access.log" combined
ErrorLog "C:\xampp\htdocs\shirlie7\logs\shirlie7.local.error.log"

nevermind...