VMWare 64bit compatibility

I use VM Ware and have Windows XP and Windows 8 installed. I rarely use either but need to look now and again if one of my Club members has a problem. I tried to open Windows 8 toaday and got this message ;

happy to go into the BIOS if it won't interfere with my Windows 7 installation. I will take a Macrium Reflect image before doing anything but that wont save my BIOS, will it? Any thoughts please. Not urgent!
Windows XP which is the more important install works fine so i don't want to loose that as I need it for my old scanner!

HAve now found this:
https://access.redhat.com/site/docum...s_in_BIOS.html
But this has left me a bit confused. I can't find the Processor Sub Menu so I have a mind to un install Win 8 and forget it! It doesn't seem worth the hassle!

Thank you Derek. So easy to do after all. It looked so complex to start with. Took about 4 mins and all is now up nd running. Can't say i like Win 8 any more but it has got a number of good points.
Thanks again.