The WiTopia personalVPN installer includes 6 pkg files. Here are the files they copied to my system:

OpenVPN.pkg
./usr/local/sbin/openvpn

PersonalVPNKeys.pkg
./private/tmp/WiTopia/keys/ca.crt
./private/tmp/WiTopia/keys/username.crt
./private/tmp/WiTopia/keys/username.key
./private/tmp/WiTopia/keys/openvpn.conf
./private/tmp/WiTopia/keys.template/ca.crt
./private/tmp/WiTopia/keys.template/openvpn.conf
./private/tmp/WiTopia/pltool

startup_item.pkg
./System/Library/StartupItems/tap/Resources/English.lproj/Localizable.strings
./System/Library/StartupItems/tap/StartupParameters.plist
./System/Library/StartupItems/tap/tap
./System/Library/StartupItems/tun/Resources/English.lproj/Localizable.strings
./System/Library/StartupItems/tun/StartupParameters.plist
./System/Library/StartupItems/tun/tun

tap_kext.pkg
./Library/Extensions/tap.kext/Contents/Info.plist
./Library/Extensions/tap.kext/Contents/MacOS/tap

tun_kext.pkg
./Library/Extensions/tun.kext/Contents/Info.plist
./Library/Extensions/tun.kext/Contents/MacOS/tun

Tunnelblick.pkg
./Applications/Tunnelblick.app