The coolermaster extremepower 430W has a rather weak single 12V
rail which may be unable to power your system if you decide to
upgrade further , don't skimp on PSU as many people don't realize
that it is the single most important piece of hardware.It powers
your system, if you get a lousy PSU and it dies, it may take other
component with it.somemore you can reuse the PSU next time if you
need to upgrade
As for the graphics you mus tell us what games you are playing and
how much details you want.In this case, since you are using a
17inch, a 7600GT should be okay.You are paying more for the "XFX"
and the "XXX edition" branding and all the frills inside, where
actually you could pay much lesser ad get the same card so the
xpertvision one should suit you.A 7900GS is basically using the
same core as the 7900GT but it is castrated as four of its pipes
are "locked".It is definitely better than the 7600Gt due to its
increased memory bandwidth.
Motherboard, depends on your preference, if you want stability,
Intel is the way to go
get a hitachi hard disk, i had a not so nice experience trying to
return my faulty maxtor for warranty when it died on me
