Obviously the .msi thing only applies to .msi installers, that was my error for which I apologize. With reference to a clean install, the fact remains that you have been battling this fault for several days, a clean install, despite the pain, would be a distant memory by now. That is my personal opinion, not Microsoft's, they disowned me long ago, in any case MVP's have nothing to do with Microsoft, although the award is issued by Microsoft, it is awarded for helping, or in this case trying to help, others. It is good that I can at least allow you to let off steam, it is better out than being kept bottled up, no matter how hard it seems to solve the problem, it will be resolved in your favor eventually, one way, or the other.
Still pursuing the Access Permissions side of things you can try this if you like.
This example might or might not work for you with your program?
"It seems that the "Run as administrator" command only gives you some administrative privileges, and they're not enough to install Java (and OpenOffice, by association). In order to get around this, you need to actually log into an administrator. Open a command prompt with admin rights by clicking start, typing cmd into the search/run box, and hitting CTRL-SHIFT-ENTER. At the prompt, type:
net user administrator /active:yes
Then log out of your regular account and back in as the administrator, where you should be able to install the program. When you're done, log back into your regular account and, for security purposes, disable the administrator account using:
net user administrator /active:no "
http://user.services.openoffice.org/en/forum/viewtopic.php?f=15&t=11706#p55879
See if this program can tell you what is going on with the Office failure to install.
Process Monitor v2.8
http://technet.microsoft.com/en-au/sysinternals/bb896645.aspx
Process Monitor Forum
http://forum.sysinternals.com/forum_topics.asp?FID=19
Need tutorial for Process Monitor
http://forum.sysinternals.com/forum_posts.asp?TID=13724
Was it purchased via the Office Online web store ?
If so, you may have to return to that site at http://office.microsoft.com/en-us/products/ Click on the Buy Microsoft Office 2010 Today link. Then click on the Buy Now button for your Product.. When you arrive at the "Items in your Shopping Basket" page, look for the FAQs link at the top of the page. Click on FAQs. When it opens scroll down to "Customer Support".
Customer Support
What is your refund policy?
Microsoft products purchased via the Office Online web store are eligible for return within 30 days of the purchase date. Applicable tax paid will be refunded on eligible returns.
Exceptions to this return policy include: Microsoft Back-up CD/DVDs are not refundable and are not included in our 30-day guarantee.
How do I request a refund?
To obtain a refund for digital product(s) please click here {get link from web page} to access your Order History information. Select the order details link of the order for which you want to request a refund. Use the "Return Item"
When will the refund credit appear?
Your refund credit will appear on your credit card within five to seven working days of us receiving your completed letter of destruction. If a different payment method was used, the times may vary.