Yes, I have the same keyboard...
I have a Microsoft Wireless Multimedia Keyboard V1.1 and a Microsoft Wireless Optical Mouse 2000. (I actually have 2 set s of these.) These came together as a bundle years ago. Both work great and have never had any issues. Unfortunately I have found out that the keyboard is not compatible with the new Mouse and Keyboard Center, though I HAVE found a way to make both work properly & be able to program BOTH with Windows 8.1.
First do NOT attempt to use the Mouse and Keyboard center as the keyboard is NOT compatible. If you have installed this software go into "Control Panel" & "Programs and Features" and uninstall.
Download these 2 files:
This is the Microsoft IntelliPoint 8.2 Mouse Software for Windows - 32 bit
This is the Microsoft IntelliType Pro 8.2 Keyboard Software for Windows - 32 bit
Or for 64 Bit versions
This is the Microsoft IntelliType Pro 8.2 Keyboard Software for Windows - 64 bit
This is the Microsoft IntelliPoint 8.2 Mouse Software for Windows - 64 bit
Each of these links are direct to the Microsoft site downloads and not a 3rd party.
I hope this helps someone else with the same issues. :)