Real men don't click, or so I'm told, so why install Office by hand? You can deploy Office on a network by using a MSI install.
First make an administrative install point on your server by running setup.exe /a from the CD. It will ask you for a location to put the install and user and serial number details.
Now you want to include the latest servicepacks, download the FULL SP from the Microsoft site and extract the file: Office2003SP2....exe /C /T:D:\Temp. (Of course you need to change D:\Temp to the location you want to use.)
Install the update by running this command: msiexec /p D:\Temp\MAINSP2ff.msp /a "D:\MSI\Office 2003 NL\PRO11.MSI" SHORTFILENAMES=TRUE /qb
More details here: http://www.svrops.com/svrops/documents/officeupdate.htm