When I download ZaSetup.exe from the Free ZA on the Zonelabs website, I can then choose to Download or Download and Install, after picking whether I want the installation to be for XP / 2000 or Vista. When I choose an option, it nearly always 'Setup was unable to find the msi package or patch'. Other forum posts say I can istall 7.0.408 but if I do that on Vista systems, it says it's incompatible! Sometimes I get that error message when I try to install 7.0.408 (when it tries to work) as well. Why is this?