Hello Robert,
Installation problems with Office products downloaded from Microsoft or purchased in retail packaging are directly supported by Microsoft for free for a scertain amount of time.
Please follow this link to start a support request for your Office 2007 H&S installation issue: http://support.microsoft.com/gethelp/default.aspx?content=ph;en-us;8753
Good Luck!
For great advice on all topics XP, visit http://www.annoyances.org/exec/forum/winxp