I use the Arkon Vent Mount that came with my GPS purchase at buygpsnow.com. It works very well.
http://images.google.com/images?q=arkon+vent+moun
I keep my cords out of the way by snaking a black twist-tie through the furthest left of my vents, then folding it over and making it into a little hook. The cords hang over there so that they dangle to the left of my climate/stereo, out of the way.
Oh, I also use this 2.5mm->3.5mm converter with MIC, plugged into a tape adapter, so that I can listen/talk thru my car stereo's speakers (also works for speakerphone and voice command):
http://www.pocketpctechs.com/main.as...tem=PPCPADPT20
If you buy that adapter above, you might as well add this awesome stylus to your cart too (doubles as a ballpoint pen -- very handy!)
http://www.pocketpctechs.com/main~un...2DSTYLUS01.htm