Your (nonsense) message was actually delete more than you censored, correct?
As you apparently did not get the message, please, refrain from posting the same or similar stuff again from now on. This user asks for help not for you to tell him/her to go for 'new' and 'expensive' hardware when it is not even necessary. Thank you.
Ati has very cheap and affordable cards that will accomplish your goal. I got mine for $100 on Newegg and it runs higher end games than cs extremely well. Browse newegg and amazon and you'll find something that will suit your needs with ease.