X-10 Remote TCP Server 1.5 will do what you want without having to scroll screen and all that junk when using other web based software. There is a client for the PDA and one for any Windows workstation and a server application that must reside on the machine which has the X10 interface connected.

http://www.creativelogichome.com/

Towards the bottom of the page you will find a link to “X10 Remote Server”

Excerpt from the site:
This handy server utility allows you to control all your home automation devices (X-10 & X-10 Compatible) with a simple mouse-click. This X-10 Remote Server will sit on a computer that is connected to your X-10 CM-11a Computer Interface. You can turn any device on / off, dim / brighten lights, turn all lights on, all units off, change housecodes, change comports, etc. all from within this little application.

Now, imagine doing all of this remotely. Imagine using your Pocket PC as a remote control that sends and receives X-10 data wirelessly. Even better how about a Remote Desktop Client for your PC too. If you are running a home network, it's easy to control all X-10 modules from any computer attached to your network by using the PC Client.