Finding cracks is illegal and dangerous. Either download the free trial, or purchase CS3.
don't ever download a crack there r dangerous one crack i downloaded wiped out my computer in 2mins
Its not very dangerous if you are smart about it. But don't do it let the company make some money so that they won't go out of business. People need to get paid for making such an awesome program even if its a bit pricey at least you know your supporting them.
Game maker is probably your best bet, and not to get off the topic but the only time I would get a crack for a program would be to evaluate the full version since nowadays a lot of companies like to minimize your ability to see the whole program. However I generally either buy it or uninstall it if I do not find what I need.