1. Intel Core 2 - which one you referring to?
2. DDR2 RAM - more details please. At $167, it's one of the most
expensive. And expensive doesn't mean good. If your motherboard
can't support it, there's no point in getting this piece of
RAM.
3. LG DVD Combo - I assume that it's CD-RW + DVD Combo. If yes, I
think you are being tok by retailers.
4. Graphics card - integrated or external? And all the details
please. Can't provide details, please provide a link.
5. HDD - SATA or IDE?
6. Motherboard details please.
7. Installation - Mac, Linux, Windows?
Other stuffs you might need
Internet hardware - modem or router. If you already have either of
this, ignore this part.
Network card - if it's not integrated with the motherboard, you
will need to get an external network card or use your previous
computer's network card.
Sound card - again, if it's not integrated, you will need an
external sound card. That's only if you want to listen to music.
Otherwise, this is totally optional. You will also need
speakers...