What Titan said is true of Microsofts new firewall/virus program also....I installed 1.57 with no problem but then I couldn't access the MP data until I told MS firewall it was ok....Now this is the new intergrated MS is pushing...I'm beta testing it.....the install was good and easy (thanks OP) and theMP Plays fine...except for a few data transfer querks that I think are on my end.... [4]