http://www.allware.com.mx/ VNCVewer for POCKETPC (IPAQ) (freeware)
http://www.realvnc.com VNC server. 4.1 (free) Set to Legacy VNC3
to use with PPC.

I had trouble getting an icon for the PPC and had to run the program
initially by clicking on the file from File Explorer. I later figured
out a hack which was, I think, based upon inverting
http://pocketpccentral.net/help/removeicons.htm