Open Word or Excel. If the suite is genuinely pre-activated, you will see "Product Activated" under File > Help . If not, you may need to run the included Activate.cmd or KMS_VL_ALL.cmd script manually.
A: Yes. Use the standard Apps & Features menu. Note that some KMS activators leave behind scheduled tasks – use KMS_Cleaner script to remove them. Microsoft Office 2010 Pro Plus X64 -pre-activated-