***update from the first post***
oh... i looked at RAM, and we (me and my friend) decided that dual channel will do fine, so we made some changes on our RAM:
http://www.newegg.com/Product/Produc...82E16820220006
this is a patriot 1gb(2 sticks 512mb). i read some things on RAM timing... and found out that CAS latency matters quite a lot... instead of 3, its 2 on this thing... not to mention dual channeling...
on the old the card, the timings were.... well i didnt even say... but the CAS latency on the patriot were 2-3-2-5-T1, which is good for the $90 price...
we also decided on a x1800xt instead of the x1900gt... its actually better in most games:
http://www.newegg.com/Product/Produc...82E16814102007
and if you want the performance on this card in games:
http://www.xbitlabs.com/articles/vid...r-x1900gt.html
here it shows the fps in games... on most the x1800xt out performs the x1900gt...not to mention the $40 price difference... and yes i know about the higher noise/watt consumption vs. the x1900gt. so we decided on that one...
and one more thing: the dvd drive is enough, you dont even need a cd drive, just a dvd drive. i thought dvd only played dvds, and cd drives only played cds... my friends co-worker pointed this out to him after mi amigo showed him the specs... and then the co-worker told me that the dvd drive would play cds; i felt li3k a big n00b...

... it was embarrasing
so this is the update...