There are different solutions to make it working when you need to access your home or office computer being away from it. Network restrictions may prevent you from using the remote desktop/terminal client or you do not have the VPN connectivity to the corporate network. The solution that worked for is to use the free version of LogMeIn which allows you to control remotely, print, share files etc. using the standard HTTP connection. LogMeIn installs the client Windows service on the computer that you need to control. You can invite the guests and allow them to view the shared application or desktop on your remote computer (similar to webex et al). Check www.logmein.com for the details.