Wayne,
If power is a problem at your location then you might want to but a power center with built in spike protection. Not all that say they are protected actually are.
The government has a program to help with the move to HD.
https://www.dtv2009.gov/ You make an application and receive the coupons in the mail. They are only good for a certain length of time and are not renewable.
Monstor cables are notoriously over priced and over hyped with virtually no scientific testing to demonstrate their claims. HDMI cables are available at Best Buy, Radio Shack or MCM (mcminone.com)
I will leave the Playstation discussion to someone who actually owns one.