I just bought a Pocket PC PDA. I intend to buy a WiFi card so that I could surf the Internet at cafe. I need to know whether there are any free firewall like Zone Alarm available for download. Also, Anti Virus softwares. Do I need Norton AntiVirus or McAffee installed in my PDA?

Am I protected if I surf the Internet with my PDA without firewall? I know this is a silly question but I have to admit that I am an ignorant when it comes to network security. I mean are PDA targets for hacking?

Thanks for answering my questions.