FINALLY SOLVED BY LENOVO!
See: "Patch to fix compatibility issue between Client Security Solution 8.3 and Microsoft Office 2007 - Windows 7 32bit (...)"
In:
http://www-307.ibm.com/pc/support/site. ... MIGR-74151

The problem with the Lenovo ThinkPad Bluetooth Laser Mouse (and others) and ThinkPad computers and Windows 7 is driver independent. Lenovo just opened its own Web Page to instruct about how to solve PROVISIONALLY the problem: Symptom Users cannot select text in the Microsoft(R) Office Word 2007 or t...

I talked about mouse driver, win7 will install its own driver. Thank you. I'll try again. I was fighting with the mouse driver. I uninstalled the Lenovo Mouse Driver BUT Windows 7 reinstall the Lenovo driver. Sadly, I don't know how to avoid the Lenovo re-installation made by Windows 7. I tryed uns...

just try to uninstall Lenovo software I uninstalled the "ThinkPad Bluetooth 2.1 with Enhanced Data Rate (Driver: Broadcom 15-Jun-09 v6.2.0.9000)" and it was replaced with "Generic Bluetooth Adapter, Microsoft 21-Jun06 v6.1.7600.16385" but the mouse is still unusable in Microsoft Outlook 2007 and Wo...

The Lenovo ThinkPad Bluetooth Laser Mouse doesn't work fine after the OS was upgraded from Windows Vista Pro & Windows 7 Pro in my ThinkPad X301 . In the Microsoft Outlook 2007 and the Word 2007 (SP2) programs, the mouse only works for commands: it is unusable in the window where the text is typed. ...

The Lenovo ThinkPad Bluetooth Laser Mouse doesn't work fine after the OS was upgraded from Windows Vista Pro to & Windows 7 Pro in my ThinkPad X301 . In the Microsoft Outlook 2007 and the Word 2007 (SP2) programs, the mouse only works for commands: it is unusable in the window where the text is typ...