Nightsky, I have one of the BlueStar adapters you saw.
I haven't used it a lot yet, but it works like this. You plug it into the AUX port of your scope's hand controller (I have a SkyWatcher Goto EQ6, which uses the Skyscan HC). You put the HC into RS232 mode, and then can control the scope from your PC running various software packages.
I have DeepSky2000 and once the scope is aligned, you can have the software send the scope where you want it to go. The advantage comes when you have a list of objects that you have planned out for the night and you can just select them one by one. Easier than using the HC to do the job.
It doesn't let you make a CCD wireless, however next year Belkin will be releasing a wireless USB hub, which in theory would then allow you to control any USB device (eg CCD camera, focuser motor etc) from the remote PC.
As to changing eyepieces, I suspect that we will all still have to brave the cold for that one for quite some time!
