Windows 7: MS Office 2010 - To a new HDD

So im selling my current PC where I have a paid for version of MS office 2010, im getting a new computer and currently getting important files onto a another storage device to put on my new HDD/computer. However I havent found anyway to keep it, if there is any? Can anyone help?

What's the problem? Can't you copy files to external device as backup?

Im not sure which ones I need to copy, theres a lot of different Microsoft files :S

Just copy my documents, my pictures and so on. Just anything you want to keep.

to reinstall office 2010:
The standard way of doing this is just uninstalling the copy of Office from the current computer and—because Microsoft only gets notified of new installs/activations, not uninstalls/deactivations—then using phone activation when you've hit the activation limit permitted by your license. If you explain the situation to them, they should give you a new key to activate Office on your new computer.

Okay so I should un-install MS office before I format my hdd, copy "My documts" to my new HDD and then just start installing... I guess the trial version of MS office and then try and activate my key, explain to them whats happened and all should be fine?

You can copy all files you need (documents, videos, pictures, music.... ) anytime you want.

Yes call them

Thanks alot!