I used to remote my computer as much as possible using SSH protocol for secure communications, because i can work and maintain the server in the same time as long as there are Internet connection.
If i don't bring my laptop or i'm not close to desktop computers, i can also use my mobile phone to connect to the computer since i'm using MidpSSH application which can be used as SSH client. Right now, the developer is working for BlackBerry version.
If you are a mobile worker and need to maintain your computer remotely using your mobile phone, i suggest you try this application. It's free