I purchased Kaspersky's anti-virus 7.0 and tried to install it today. I got a error box stating "error 1304 error writing to file". Tried both the purchased CD and tried the downloaded trial version and neither would install. After investigating from Kaspersky the error code says that Kaspersky is not compatible with Zonealarm's firewall which I run. Can someone please recommend a free firewall that would be compatible with Kaspersky? Even disabling zone alarm the CD won't install. Thanks.