Drawing cards isn't too hard in the first place(just the face cards are a challenge) just draw a card, put the number on it, then use the 4 card ascii symbols(use charmap to see what they are) to make the symbols, and that's pretty much it, except for facecards. For a shortcut to facecards, you can use your games logo(or the logos of the sponsors to your games), rather than the traditional faces on them..

You can use CSS to create cards, then screen capture them.

you´re best off making your own, playing card manufacturers are pretty serious about their ip (one of our games had a licensed set of cards, wasn´t cheap).