I bought a new 9150 to replace my 4550. The 4550 ran a P4 2.6 and the\n9150 has a 2.8 D processor. The 4550 had XP Pro. The 9150 has XP\nHome. Those are the basic differences.\n\nI tried to install Delorme Street Atlas 9.0 this morning on the 9150.\nThe setup.exe would not run. Just sat there. I thought perhaps the\nCD was bad, so I got out my older Street Atlas 8.0. Same thing! I\neven tried shutting down the virus protection and firewall temporarily\nto see if that was the problem. Anyone else run into this problem\nwith the dual processors? Although I can't imagine why that would\nmake any difference.