afraid so much to buy unuseful components

1- are these components suitable to make editing and graphic and render
by final cut and adobe after effects and Maya and more programs

iam afraid so much to buy unuseful components to me in my aim

my future components which ll buy

MB - GIGABYTE GA-EP45-UD3R
PR - Intel® Core™2 Quad Q6600 (8M Cache, 2.40 GHz, 1066 MHz FSB)
NVIDIA GeForce 8800 GTS 320MB 320 bit
HD-Western Digital Green 1000GB AADS 32M Cache SATAII
RAM- 4GB Kingston DDR2 2*2GB bus 800MHz
DVD. w - lg 20x
Monitor - Philips 15 107 E5
Power supply – 500w

2- wt's the best DVD writer for mac on PC
specially which will use in editing and graphic programs with toast and idvd programs ?

3- this VGA card suitable to mac and editing programs ?

NVIDIA GeForce 8800 GTS 320MB 320 bit
GV-NX88S320H-B-RH
http://www.gigabyte.com.tw/Products/VGA/Pr...?ProductID… ↗

i found it as used and ll hv it
but dt know if it's good for setup mac on pc
and good in programs like that
final cut
adobe after effects
motion color
Maya

wt's advantages and disadvantages of card ?
plz need ur advice really