MacOS X 10.4.4 is an operating system, and comes with no third party 'office' like applications - for free.
Your Macintosh came with MacOS X 10.4.x and a trial version of Microsoft Office 2004 pre-installed, as stated by dalibal.
Depending on the complexity of the '.doc' file, you may be able to view and / or edit it with 'TextEdit' ('/Applications/' folder). The same applies to 'AppleWorks', if provided by Apple.
Also, depending on the complexity of the document, the originator of the '.doc' file may be able to create a '.rtf' file, which you may be able to view and / or edit with 'TextEdit'.
Finally, if the document is to be 'read' only on your part; perhaps, the originator may be able to create a '.pdf' file, of which you can view and print via '
Adobe Reader', and even 'Safari'. The same applies to 'AppleWorks'.