Even the highest rated Intel chipset (Intel HD 3000) is useless for gaming, and the 4500 is ranked at about half of that that is. Intel chipsets are really only good for everyday computing.
If this were a desktop, I'd recommend getting a good card put in, but given that the Aspire 5735Z is a laptop, you won't be able to change this. If you want to want to play games, I'd suggest building a decent desktop system. If you want to play them on the go for whatever reason, get a decent laptop with at least an Nvidia or ATI chipset in them, but you probably still won't get as good performance like you would with a desktop.