The built-in File Explorer has this capability. Open File Explorer on the PocketPC and tap the right-most small icon at the bottom, ie. the one that looks like a hand holding trash can. Note that you can only cut-n-paste/copy files between the desktop and PPC.
Look at Netuse (
FREE), Netrunner (
FREE) or Resco File Explorer (
$$$) if you need to open files across the LAN from your PPC. Personally, I use Netuse on my 3835 and a D-Link DCF-650W wireless card...
http://www.bizzdev.com/en/downloads/netuse/
http://www.pcdemano.com/modules.php?...ticle&artid=51
http://www.resco-net.com/homepage.asp