Hi, Mercier1.
Thank you for visiting Apple Support Communities.
This sounds like you have a valid Apple ID, but it has never been used with iCloud. To use iCloud, you must first sign up via your Apple ID on an iOS device running iOS 5 or later. This can also be done on a Mac running OS X Lion v10.7.5 or later.
iCloud: System requirements
http://support.apple.com/kb/HT4759
Creating an iCloud account: Frequently Asked Questions
http://support.apple.com/kb/HT4436
Once you have created an iCloud account via one of this listed ways above, you should be able to use it on your PC.
Cheers,
Jason H.