You could do Barbell curls too. Sit down on a bench with your legs infront of you, and rest your arms on your knee and roll the barbell intil it's going to fall out your hand and curl it all the way up again. This is what I do. Make sure your form is good too. I like to have my knuckles pointing into the air, so my arm is a perfect straight line all the way up. I see lots of people have their wrists bent right back and push that way, which looks very akward and straining. I know I couldn't do it that way.

Benni.