Error with Windows Vista and Office 2007

[X-Ray]

I have a problem with Windows Vista Ultimate & Office 2007 Ultimate. Whenever I try to open Office it starts it configuration & then an error message comes up: "Microsoft Office Word has not been installed for the current user" and then Word closes immediately. It was working fine before but I think due to some update it is being suffering. Note that I am also the admin of my computer. Please help me with this problem.

[unidentified]

Did you check this threads: Error Installing Office 2007 on MS Vista
How to fix Windows Update SP1 Error 78f on Office 2007
http://forums.techarena.in/office-setup/873620.htm

[nitesh mehta]

Did you try to run the installer again and select repair or reinstall for this problem?

[newtech]

Try this, found it on the Microsoft website

To resolve this problem, follow these steps:
1. Log on to the computer by using an Administrator user account.
2. Start Microsoft Windows Explorer.
3. On the Tools menu, click Folder Options.
4. Click the View tab.
5. Under Hidden files and folders, click Show hidden files and folders.
6. Click to clear the Hide extensions for known file types check box, and then click OK.
7. Open the following folder:
C:\Documents and Settings\All Users\Application Data\Microsoft\Office\Data\
8. If you are running Office 2003, right-click Opa11.dat, and then click Properties. If you are running Office XP, right-click Data.dat, and then click Properties.
9. Click the Security tab.
10. Click Advanced.
11. Click the Permissions tab.
12. Click to select Everyone in the Permission entries list, and then click Edit.
13. Click to select the Full Control check box.
14. Click OK three times.
If these steps do not resolve this issue, delete the Opa11.dat file or the Data.dat file from the following folder, and then restart an Office 2003 program or an Office XP program
C:\Documents and Settings\All Users\Application Data\Microsoft\Office\Data