Office 2003 cab problem

I downloaded Office 2003 Standard edition (officestd.exe) from microsoft 's site. The problem is that when I run this file , an error message comes saying this "Extracting file failed. It is most likely caused by low memory (low disk space for swapping file) or corrupted cab file." I tried to open with Winzip and winrar and tried to manually extract the file but again both the programs said that the cab file is corrupt. what should I do??? The file size is 212MB !!