I had been emailed an early beta for this program when it was free and had since forgotten about it, but I was recently reminded of SideWindow.
It acts as a dual monitor for your PC. I suppose it was meant for desktop PCs and Pocket PCs with cradels, but I have niether. I have a crappy PPC with no cradel and a laptop. But since I have a laptop, it comes bluetooth enabled. So, with a bluetooth connection to my PPC, I can use it as a handheld control for MSN, a text document, anything! Even iTunes. I made this video to show you what it looks like.
It runs at a slow speed, but really, what are you going to put onto it? Doom 3? It works fine for MSN, music players, or anything else.
I recommend it.
There is a free trial. But let's just say I have it, and I didn't pay *wink wink*.