You will need to order a serial cable for your PocketPC.

I know that Compaq and HP have serial cables for their PocketPCs.

Compaq
http://www.compaq.com/products/handhelds/pocketpc/options/pc_connectivity.html

HP Jornada 520/540/560 series
p/n# F1819A#ABA

Other PocketPCs
Check your manual or go to the website of the mfg.

DSLBiker