Differences Between XP And 2003 When Installing SQL Express

Hello, I'll start by saying that I don't know the first thing about SQL.
I have product that I am trying to setup on a windows 2003 R2 SP2 server that requires SQL Server Express 2005. I have this same setup installed under Windows XP Pro SP2 and it works fine.

The product uses a PHP script to talk to the SQL Server to create the orginal DB but I get the following errors:
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Creating initial MFP Database...
Warning: mssql_pconnect() [function.mssql-pconnect]: Unable to connect to server: localhost,1444 in C:Inetpubwwwrootdbwrap.php on line 15

Warning: mssql_query(): supplied argument is not a valid MS SQL-Link resource in C:Inetpubwwwrootdbwrap.php on line 34


MSSQL Query Error:
Error:
Query: SELECT * FROM master.dbo.sysdatabases WHERE name = 'MFPACS'


Warning: mssql_num_rows(): supplied argument is not a valid MS SQL-result resource in C:Inetpubwwwrootdbwrap.php on line 55

Warning: mssql_query(): supplied argument is not a valid MS SQL-Link resource in C:Inetpubwwwrootdbwrap.php on line 34


MSSQL Query Error:
Error:
Query: CREATE DATABASE MFPACS


Warning: mssql_select_db(): supplied argument is not a valid MS SQL-Link resource in C:Inetpubwwwrootdbwrap.php on line 26

Warning: mssql_query(): supplied argument is not a valid MS SQL-Link resource in C:Inetpubwwwrootdbwrap.php on line 34


MSSQL Query Error:
Error:
Query: CREATE TABLE Logs ( username varchar(32) not null, accesstime datetime not null, message varchar(32) not null )


Warning: mssql_query(): supplied argument is not a valid MS SQL-Link resource in C:Inetpubwwwrootdbwrap.php on line 34


MSSQL Query Error:
Error:
Query: CREATE TABLE Users ( username varchar(32) not null, passmd5 char(32) not null, fullname varchar(64) not null, access int not null, interface int not null, timeout int not null, loggedin bit not null, remoteip varchar(16) null, lastaction datetime null )


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I have enabled the running of PHP scripts under IIS in Windows 2003 R2 (along with all of the other listed web executables). But I am stuck. For some reason the PHP scripts seem to either not have permission to talk to the DB, or Windows has some extra security in it that I need to know how to work correctly with.


I also am checking my ODBC > System DSN
when I try to craete my datasource, I get:
Connection Failed:
SQLState: '08001'
SQL Server Error: 2
[Microsoft][SQL Native Client]Named Pipes Provider: Could not open a connection to SQL Server [2].
Connection failed;
SQLState: 'HYT00'
SQL Server Error: 0
[Microsoft][SQL Native Client]Login timeout expired
Connection Failed:
SQLState: '08001'
SQL Server Error: 2
[Microsoft][SQL Native Client] An error has occurred while establishing a connection to the server. When connecting to the SQL server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections.

FYI I have set TCP/IP properties for SQL under Protocol > General > Enable - YES.

Thanks for any assistance.