if you're truly looking for a "gaming" system...i'd would seriously suggest you NOT go w/ any 6200 type cards...they we're really not made for gaming..and if they are...they don't run well..
just what i've heard, read...
look for at least a 6600 and up for nvidia...
or 9600pro and up for ATI cards.
see that weekly gaming special for $683? i'd go for that AMD64 over Intel for gaming.
then just order another 512mb stick of RAM from newegg, and you'll have your 1GB.
good luck man.
\"I am not young enough to know everything.\" - Oscar Wilde