UPDATED 03/19/10
Right now, I'm across town using my home computer from my iPhone. The LogMeIn app ROCKS!!!
There is a bit of a learning curve, but worth $29.99, if you need access to your home computer from the nether-world.
I will post details once I'm better skilled.
**UPDATE** March 19, 2009
I'm still learning. This is great on the iPhone - but it will be SPECTACULAR on the iPad!!!
Here are a couple YouTube videos by aramistech.com that will explain it for the iPhone in detail.
Remote Access Anywhere FREE on the iPhone Part 1
Remote Access Anywhere FREE on the iPhone Part 2

Thanks
Hi Tracy,
I’m looking forward to hearing more about your experience with LogMeIn Ignition for iPhone. Please let me know if you have any questions.
Maggie Hibma
Social Media Coordinator, LogMeIn
www.Facebook.com/LogMeIn
www.Twitter.com/LogMeInNews