Worked for me (had screen freeze problems)
I Downloaded 4 programs to fix the problems, and needed the risk installer. Below the programs are the installation steps.
Program 1: Virtual PC 2007 (http://www.microsoft.com/en-us/download/confirmation.aspx?id=4580)
Program 2: Windows XP installer, and use your own cd key to activate (http://www.majorgeeks.com/mg/get/microsoft\_windows\_xp\_mode,1.html)
Program 3: OR download MagicISO (http://magiciso.com), or use some other iso making program.
Program 4: RISK 2 installer
Program 5: If you want warzone, download also the warzone installer (http://www.ewarzone.com/downloads/WarZoneInstall.exe)
Step 1: After installing program 1,2, and3, go to the folder where you have program 2 installed. The file Windows XP Mode base.vhd. It is marked as read-only (right mouse on file, then properties). Unmark read-only.
Step 2: Open MagicISO. Use the program to create an iso file.
This ISO file should contain the risk2 installer, and the warzone installer (if you want warzone ofcourse).
Step 3: Run Virtual PC 2007, to create a new virtual pc. When askes for operation system, select winXP. Use recommered RAM.
Select that you want to use an existing virtual hard disk. Choose to use the file installed from program 2: Windows XP Mode base.vhd. Press finish.
Step 4: Start the created virtual machine, and install windows XP.
Step 5: When in Windows XP in the virtual machine, select pulldown-menu CD (middle, top of screen). Then select Capture ISO image. Select the ISO file, created in step 2.
The virtual machine will mount the CD in the D: drive (probably).
Step 6: Install Risk 2, (and warzone).
This worked for me, with Windows7 Ultimate SP1, 64bit.
Hope it will also work for some others.
Greetings