Lingvosoft provides Chinese simplified translation software for PalmOS. You can download trial versions, to see what works best for you. The software packages fall into these basic categories:

• Chinese Simplified Talking Dictionary (just under $50). This is what most people are looking for. Load this on your machine, and you have a virtual translation device. It delivers instant bi-directional translation of all the words and phrases in its massive database.
   

• Chinese Simplified Software Bundles (prices vary, depending on the bundle). A software bundle can provide significant cost-savings, if you need multiple languages or you want to combine the features of other offerings into a single economical package.