To change the product key you’ll have to uninstall the Office suite from your system and then reinstall it.

But here is a small and simple tutorial which will help you in changing the product key without uninstalling the Office.

Change Office XP Product Key:

1. Open regedit and go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\10.0\Registration
2. Under "Registration" key, you’ll see one or more GUID (Globally Unique IDentifiers) containing a combination of alphanumeric characters in following format: {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
3. 3. Select each key and look at "ProductName" key in right-side pane. One GUID key will contain the version number of Office installed in your system "Microsoft Office XP Professional Edition".
4. Select that GUID key and delete following 2 registry entries from right-side pane: DigitalProductID / ProductID
5. Close registry editor and run any Office application e.g. word, excel, etc. It should prompt you to enter a new product key.
6. Enter the desired product key and click on OK. That’s it.

Change Office 2003 Product Key:

1. Open regedit and go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\11.0\Registration
2. Under "Registration" key, you’ll see one or more GUID (Globally Unique IDentifiers) containing a combination of alphanumeric characters in following format: {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
3. Select each key and look at "ProductName" key in right-side pane. One GUID key will contain the version number of Office installed in your system e.g. "Microsoft Office Professional Edition 2003".
4. Select that GUID key and delete following 2 registry entries from right-side pane: DigitalProductID / ProductID
5. Close registry editor and run any Office application e.g. word, excel, etc. It should prompt you to enter a new product key.
6. Enter the desired product key and click on OK. That’s it.

Change Office 2007 Product Key:

1. Open regedit and go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\12.0\Registration
2. Under "Registration" key, you’ll see one or more GUID (Globally Unique IDentifiers) containing a combination of alphanumeric characters in following format: {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
3. Select each key and look at "ProductName" key in right-side pane. One GUID key will contain the version number of Office installed in your system "Microsoft Office Professional Edition 2007".
4. Select that GUID key and delete following 2 registry entries from right-side pane: DigitalProductID / ProductID
5. Close registry editor and run any Office application e.g. word, excel, etc. It should prompt you to enter a new product key.
6. Enter the desired product key and click on OK. That’s it.

IMPORTANT NOTES:

1. Take a backup of "Registration" key before deleting the registry entries from right-side pane, so that in case the new product key doesn’t work you can restore the previous key without any problem. To take backup right-click on "Registration" key and select "Export".
2. If you are a x64 bit Windows user, then the key location will be different in registry. Please check following paths:

Office XP: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\10.0

Office 2003: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\11.0

Office 2007: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\12.0

1. On the Review tab, in the Proofing group, click Set Language .

2. A language box should show up. Click French (Canada). If French will be the default language click the “Default..” language

Click “OK”.

That’s all there is to switching Word 2007’s spell check to Canadian French.

When I rebooted I started some more vista updates and then opened Word knowing I’d be prompted to activate the product again. Again the same issue happened. This got me thinking… Can updating Windows effect activating Office?? Really??

Guess what the answer is???

YES!

As soon as the updating in Windows Update was done I quickly hit “Activate Now”. Office activated within a second.

So now you know. If you are applying updates and needing to activate Office just activate Office first and then finish things off.

You might be wondering how to stop outlook from opening attachments in “reading mode”. To do this you must:

1. Go into Word
2. Go to Tools-Options
3. Uncheck “Start with the reading layout”.

This will force all word documents not to start up in reading mode.

I client of mind was having issues with sending Outlook appointments.

1. She was clicked on the “Calendar” she wanted to send.
2. She then clicked on the appointment.
3. She went up to Actions
4. Send as iCal
5. She would receive an error message stating that she didn’t have enough permissions to create an iCal

I found a program called “Outlook Temp Cleaner” that really helped me out. It turns out the reason why Outlook couldn’t create an iCal was a file in her temporary folder was corrupt. This program easily shows you where that folder is.

1. Make sure that Outlook is closed.
2. Install “Outlook Temp Cleaner” program
3. Once you have installed the software click on “Clean Cache”.

Once you have done this start outlook. You will notice that Outlook will start a little slower. It is re-creating the temp files it needs. Try sending the iCal again. You will notice that outlook will now Open an email with an iCal file in it like it should.

If it is Office 2007:

• Select Office Button>Word Options>Advanced then scroll down to "Display"

Otherwise I think it is in:

• Tools>Options>View

Tick the "Show vertical scroll bar" check box.