#26 Problem on install.php

[Anonymous]

When I launch the install.php, it showed lots of
errors and I cannot continue to install it.
I am using PHP 5.1.2 + MySql 5.0.18 and IIS 5.1. I
have tried easyPHP 1.8 which contain PHP 4 + MySql 4
+ Apache, however, problem still the same.

Here are the errors...

Notice: Use of undefined constant company_statistics -
assumed 'company_statistics' in
c:\Inetpub\wwwroot\myhelpdesk\code\lang\en\language.ph
p on line 390

Notice: Use of undefined constant tickets -
assumed 'tickets' in
c:\Inetpub\wwwroot\myhelpdesk\code\lang\en\language.ph
p on line 391

Notice: Use of undefined constant first_ticket -
assumed 'first_ticket' in
c:\Inetpub\wwwroot\myhelpdesk\code\lang\en\language.ph
p on line 392

Notice: Use of undefined constant last_ticket -
assumed 'last_ticket' in
c:\Inetpub\wwwroot\myhelpdesk\code\lang\en\language.ph
p on line 393

Notice: Undefined index: step in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 14

Notice: Undefined index: first in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 15

Notice: Undefined index: last in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 16

Notice: Undefined index: email in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 17

Notice: Undefined index: phone in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 18

Notice: Undefined index: fax in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 19

Notice: Undefined index: pwd1 in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 20

Notice: Undefined index: pwd2 in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 21

Notice: Undefined index: username in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 22

Notice: Undefined index: company in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 23

Notice: Undefined index: admincomments in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 24

Notice: Undefined index: companycomments in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 25

Notice: Undefined index: address in
c:\Inetpub\wwwroot\myhelpdesk\install.php on line 26