Erm that has a MIPS processor, an obselete processor artitecture that about 99% ( ok may be 90% ) of developers are not writing for.
Currently almost all software for PocketPC are being written for the StrongArm 206Mhtz processor.
Also getting a PocketPC for 150$ you are just asking for trouble.
It does have a CF slot which is good, but probally only supports memory cards not devices. That one probally only runs an older PocketPC , or just WinCE 2.0(the screenshot on that looks like the older WinCE 2.0 ), and not the latest PocketPC2002, also its screen is crap compared to the 500$ + ones, the casio probally has not expandibility options.
All the good ones, are over 500$ ( especially the new 400Mhtz ones ) now PalmOS based ones for 150$ yea, they're pretty much all the same, in that case I would recomend a Handspring Visor, because least with those you can use the springboard expansion slot, where the alternative PalmOS based PDAs dont have expansion slots. Karl Blessing aka kb244{fastHACK}