Creating HD Textures for a Game?

[Failcookie]

On an additional note, looking outside the font for just a moment. Some textures, such as.. let's say.. a bag of money. The best way to deal with the resolution on that would be to completely redraw it correct? I can't think of a way that PS could blow it up and make it look any better. But I want to know for sure before I take a longer route on accident.