Trying to re-install mac office 2011 (downloaded dmg) but installer "not responding"

Question

My Mac Word 2011 seems corrupted, so I downloaded a dmg (from my Amazonm Software account {I purchased the 2011 Office package on Amazon in 2011}) in order to try to re-install.  Interestingly, the downloaded dmg is a file named "Office_Mac_Home_and_Student_2011_1_User_3_Installs_OLD_VERSION_Downloader.dmg" .
The problem is that the installer doesn't work.  It hangs every time with a "not responding" message appearing in the "force quit" window.
I should be able to get some help from Microsoft, I suppose, but don't know who to call at microsoft.  By thye way, I have never hade to reinstall any software bought over the web (so that i do not have any DVD copy) so this is probably more confusijg to me because of that.  Thanks.
I am using Snowleopard on an iMac
Winston

Answer 1

Why not simply re-download directly from Microsoft's website? Seems much easier going right to the source rather than using a reseller? Also if you have been backing up you can also restore from Time Machine which would be the easiest solution. Either way you will need the MS's install codes for re-installing the app.
BTW locating MS's download site took all of a second to research using Google. I searched for Office for Mac download and found:
http://www.microsoftstore.com/store/msusa/en_US/list/ThemeID.33363200/categoryID .62686000?tid=srugZITIq_dc&cid=5250&pcrid=22408403093&pkw=microsoft%20%2Boffice% 202008%20for%20%2Bmacs&pmt=b&WT.srch=1&WT.mc_id=pointitsem_Microsoft+US_google_5 +-+OMac+2011&WT.term=microsoft%20%2Boffice%202008%20for%20%2Bmacs&WT.campaign=5+ -+OMac+2011&WT.content=rugZITIq&WT.source=google&WT.medium=cpc