You need new case, MB, CPU, and DDR3 (2x4GB) RAM, and the PSU maybe ok. It depends on how old it is, and what brand too.
ok. i said the power supply only because of the way it sits in the case. It works well. ill look into it more after i order case and motherboard, cpu, Ill post on here what i went with. just got to make sure i get one with a PCI slot for my graphics card. Thank you very much for your insight and help.