Help Save My Printer! ('cause i'm gonna kill it!)

I don't know what the deal is, but I'm fixing to smash my printer into little bits!

It's the paper load; something is wrong with the printer, or something is wrong with the settings. (Which would mean something is wrong with me! ) It does just fine with normal paper (actually I use copier paper in it), but with card stock it tries to pull the entire stack of paper down inside itself all at once! To print with card stock, I have to load each piece of paper one at a time, and it's a major pain.

So is this printer messed up, or should I be using another media setting?
The printer's media selection gives all sorts of media options, but card stock isn't one of them. Any suggestions?

Oh, btw, the printer is an Epson Color Stylus 600 inkjet. The copy paper I use is normal printer paper weight, I'm pretty sure, but I can't remember exactly what weight the card stock is...

Thanks!