If you want to install office 2010 & Activate it, then follow the given steps for 32-bit & 64 bit here.
How to Install 32-bit Microsoft Office 2010?
Insert the Office 2010 disc into the drive. If the setup wizard doesn’t start automatically, navigate to the disc drive and click SETUP.EXE.
If you don’t have disc, you can download office here : office.com/setup
When prompted, enter the product key.
Read and accept the Microsoft Software License Terms, and then click Continue.
Follow the prompts and after Office installs, click Close.
In the Activation wizard, click I want to activate the software over the Internet, and then follow the prompts.
Now you need to Activate Office
File > Help > Activate Product Key.
How to Install 64-bit Microsoft Office 2010?
You must be running 64-bit Windows.
Insert the Office 2010 installation disc.
Click Start, > Computer, and right-click in the disc drive where the Office 2010 installation disc was inserted, and select Open.
Open the x64 folder in the installation root, and then double-click setup.exe.
After setup completes, continue by following the default installation instructions, by entering the product key (step 2).
Visit www.office.com/setup for complete application