I cannot get this product (Antivirus 2010) installed on my XP Pro computer. It installed fine on my Vista. I get an error message "There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel." I have called support and they said someone would call me back (that was a week ago). I have written emails but the only response was to uninstall all the Microsoft Visual C++ redistributable packages. I'm concerned that I might be uninstalling something another program needs. How would I get this reinstalled if I needed it? I'm not sure why that's the problem because I have these on Vista and it didn't stop it from installing. Can anyone give me some advice?