LogMeIn Free
LogMeIn Free includes: access from any Internet-connected Web browser; access to a Windows PC or Mac, remote control and desktop viewing, copy and paste between computers, Wake on LAN, reboot/reconnect (including safe mode), basic reports (remote access sessions and user access), Chat, AES 256-bit encryption, SSL/TLS intrusion detection, IP address lockout. No need for firewall, router or proxy configuration. No requirement to be remote PC admin.