Unshielded twisted-pair (UTP)
because it is relatively inexpensive and easy to install...
There are too many updates when you install Java on your computer. The reason one has to install Java so frequently is because the updates are mainly used to improve the device stability and performance.
You can either install them on three partitions or use virtual machines. I would recommend virtual machines. They are frequently free or inexpensive and allow you to run multiple OS's at the same time. Try google'ing vmware.
Installing new speakers is the single most cost-effective improvement you can make to your vehicle's audio/video system. Not only are aftermarket speakers relatively inexpensive, they are typically not difficult to install. Look here - http://www.crutchfield.com/S-FlBDMEk0p7k/learn/learningcenter/car/speakers_install.html
It is relatively easy with the correct tools for the install
It is a relatively easy install if you have instructions on how to do it.
Metal shelving is relatively inexpensive and easy to install. Depending on what type of shelving unit you'd like to install, you can expect the cost to be about $20-40 per shelf. Another low-cost option for you would simply be to sand the wooden shelves you currently have and apply a coat of latex paint.
phoneline
Both a Turbo and a Supercharger are relatively easy to install on the Chargers.
As this unit is relatively simple to install is should not require the use of a professional.
In computer networking, the type of cabling that is easiest to install is coaxial cable. It is a light, inexpensive and flexible cable.
The color codes are different depending on the model and year. Your best bet would be to go to a best buy, circuit city, or aftermarket stereo shop and buy the wiring harness for your car. They are relatively inexpensive and easy to install.