I was told about this cool package called Logmein.com
Access your home or work computer from any web-enabled device, including a laptop or pocket PC – for true mobility, freedom and flexibility.
Visit customers, go on vacation or go home early and still have total control of your computer as if you were sitting in front of it.
Some other features of the PAY package are:
Fully control the mouse and keyboard of any remote PC from a web browser.
Securely access, transfer and backup important files and folders.
Easily share files – even those that are too large for email.
The only problem I have with this package is the price of $69.95 per year per machine.
There are other excellent packages such as RealVNC or Remote Administrator and they offer similar features for free.
BUT, after using it tonight to access my web server on another machine, and my work PC in another county, I must say it is pretty damm amazing, fast as hell, in fact it is faster than Ultra VNC and to date that is all I have used. So I will be using the free edition of logmein.com, which allows remote control only and Ultra VNC for file transfer.