Five stars. Best free software award: Logmein.com

I use Logmein pro often from everywhere. It gets 5 stars in my rating book. I don't own any equity in the company.

Here is their blurb:

For fast, easy and convenient remote PC access, try LogMeIn Free.
Like the millions of users who already rely on it every day, you'll wonder how you ever lived without it.

Simply install LogMeIn on the computer you want to access, and then you can beam into that PC from anywhere using just a web browser. Whatever you can do when you're physically at the PC, you can now do remotely over the web.

• Open remote files • Access from any browser
• Check your email • Access from wireless Pocket PC
• Run programs • Easy-to-use interface
• Support remote users • 100% FREE to use!