I'll try and reply with something more useful than the I hate these threads comment.
Firstly, we need to have some idea of your budget and what mp you are aiming to farm / do ubers on.
Secondly most Barbs have dropped the shield and are running WW builds. If you feel more confortable with the shield, that's fine but replace it with one that has crit chance. I picked up a stormshield with 31% block and crit for 500k the other day just for the hell of it.
At the moment, I would prioritise new chest and pants as yours are both missing base strength. As an example search for 90 STR, 150 VIT, 40-60 all resist and 3 sockets. Same for pants but 2 sockets of course.
Crit chance looks ok, so you want to get more crit dmg on weapon via socket + gem. Also you're going to need life steal / LoH for higher MP levels.
Edit - I just noticed the bit saying you have some WW weps.
Edited by GingerAnger, 23 November 2012 - 01:04 PM.