I have not bought a PDA Phone at all.My friend asked me about this. That costs too much for me. Normally, it costs around AUD$1K. Moreover, this is not very useful for me. I am not a salesperson. I don't need to track my schedule. All I need that makes call and record my contact list.

Apple II History
http://en.wikipedia.org/wiki/Apple_II_series

Please read BBC World http://news.bbc.co.uk/2/hi/technology/6908946.stm

One Laptop per Child, they are building a USD$100 Laptop. They are aiming to provide a laptop to some third wold countries.

My main PC is around 4 years old now. This is the time to replace it.
I am considering to an AMD PC. This is because AMD dropped the CPU price. AMD Athlon™ 64 5200+AM2 Processor Retail Dual Core AM2 is around AUD$170.