I attempted to download and install Zone Alarm (free edition) on a Windows Vista system. Now, my isp provider can see my computer but the computer will not allow me access.

1-Zone alarm failed to load. It got to 19% and hung up for over an hour with no response.

2. ZA does not show up in the installed programs

3. I cannot uninstall since the program is not installed.

How can I get rid of this partial installation?

Operating System:Windows Vista Home Premium
Software Version:7.1 (Vista)
Product Name:ZoneAlarm (Free)