Hotbars left to right, instead of up and down?

[VincentVolaju]

When I played here last year for a while, I remember having my hotbars going from left to right. I remember taking 2 long hotbars and setting them on top of each other, a lot like how most MMO's do there bars now a days. I know I had it this way because I remember making macros and have the top hot bar all bound to Shift + #s. However when I just reinstalled last night my hot bar is now one that has 2 columns side by side going up and down.

Is there some way to change this back to the left to right rows?