How to connect home computer from anywhere?

Hello friends,
I want to access my home computer from my office or anywhere. Is there any software or program which can be use to access my home pc? Please suggest something useful.

All suggestions are welcome.

Virtual Network Computing (VNC) is a graphical desktop sharing system that uses the RFB protocol to remotely control another computer. It transmits the keyboard and mouse events from one computer to another, relaying the graphical screen updates back in the other direction, over a network. A VNC viewer on one operating system may connect to a VNC server on the same or any other operating system. There are clients and servers for many GUI-based operating systems and for Java. Multiple clients may connect to a VNC server at the same time. RealVNC provides remote control software which lets you see and interact with desktop applications across any network.

Anyplace Control is remote PC control software that displays the remote computer's desktop on the screen of your local PC, and allows you to remote control computer using your own mouse and keyboard.
The built-in File Transfer feature provides an easy way to transfer files to and from a remote computer. With our remote control software you can also restart and shutdown a remote PC, lock a remote mouse or keyboard, and perform various practical remote control tasks.

HB Remote PC is a secure and simple way to access your computer
connected to the Internet from anywhere in the world. You can read your emails, work on the documents and resources and retrieve important documents and data files from your home or office computer while on road.