Well the zonealarm doing automatic scans is normal,although you can turn them off in the settings/preferences.
If you wanna completely stop it from starting when you boot do this
Start>Run>msconfig
Then go to Startup and look for the ZoneAlarm entry and UNcheck it.Then click OK and itll ask you to reboot.It's recommended to reboot.
And by the way,explorer.exe is the process that turns on your taskbar and your icons.Without it you're left with a wallpaper image.
If you ever get stuck with a wallpaper image and your computer doesn't seem to be doing anything do the following:
CTRL+ALT+DEL>Open up TaskManager>go to the applications tab>New Process>type "explorer.exe" (without the quotes)
If nothing works..then wait for a real techie to help out
And btw,nice AlienWare