Solution found. Well, at least it worked for me.
Uninstall "SciTech GLDirect".
I figured it out when I loaded my XP partition and installed JA and JO and they ran fine. I changed my resolution once and the next tie I restarted the game i got a "VM_create on UI failed" error (or something similar) I downloaded GLDirect, to fic the problem, and started the game and got the white screen problem I had with Windows 7. I uninstalled the program and both JA and JO went back to working fine. I switched back to Windows 7 and tried it, and awesome results. Happy man here.