Im planning on creating a home brew computer from scratch and this will be my first time doing so, i need a little help from someone knowledgeable as i need a list of parts i need to make the computer and maybe some links to where i can find the parts cheap in the UK. I currently own a Dell Dimension 3100 with a single core 3.06GHz processor and 1GB of RAM (lol). Heres the list of all the parts i have thought of off the top of my head and my preference of appearance etc...
Tower - slots for CD-RW and DVD drive etc and some spare, transparent side case or with coloured LEDs inside or attached to any fans
Processor - Im looking for a quad core, of atleast 2GHz
Hard Drive - 150GB to 250GB would be perfect
Graphics Card - Im illogical on these, but im guessing a mid-range 512MB good quality one
RAM - 3 or 4GB would be perfect, although 2GB may be acceptable
Tell me what else i need, my operating system will be Win7 Home Premium.
I also have no clue on what brands are good or not, so suggestions on all parts that are of good price and quality to come together for a fast computer of running and opening programs smoothly, fast and efficiently etc will be much appreciated.