Step 3 - Windows 10 sucks and you should probably get rid of it.
bwahahaha, can't say I disagree, but then I do own multiple machines from the fruity company, so I guess that's an altogether different issue.
Back on topic: @zumpbond2000 do what sidehack suggested and load VH's new cgminer; plug the Compac into a USB2.0 port (they don't like USB3 ports); get a good powered USB hub; get a small fan to cool the Compac to ensure a long life.
Regarding the USB hub and cooling fan, search back through this thread for some suggestions for both. There is at least one other thread for powered USB hubs, too.
Edit 1:
USB Hub Thread:
https://bitcointalk.org/index.php?topic=1779423.0Edit 2:
This is the setup I use:
https://bitcointalk.org/index.php?topic=1173963.2420