Ok first off I'm a big n00b in SkinStudio.  I'm extremely proficient in Photoshop so I understand about layers and the like.  So far SkinStudio seems pretty easy, but I'm already failing at the taskbar.  I'm trying to make a cow-print skin, and I got it to work on the task bar seemingly fine until you lengthen the height of the bar, it stretches the middle instead of just tiling it.

I've messed with the different margin settings, adding new layers to have a different pattern in the middle(the pattern wouldn't stay in the middle, it always sat on top of the original taskbar image.  I'm rather clueless right now, so I'm going to work on buttons while I wait for a reply, lol