Kubuntu 12.04 looks very bad on ibm t23, need help, made screenshots!

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http://askubuntu.com – first of all, I'm using a Linux OS for the first time (kubuntu 12.04) and I'm absolutely amazed of it. I learned a lot in the past few days, and everything works great on my old machine but the looks of the OS is absolutely unacceptable. I couldn't figure it out by my self so i decided to ask for help in this forum. But see yourself: http://imageshack.us/photo/my-images/26/snapshot1ns.png/ http://imageshack.us/photo/my-images/543/snapshot3s.png/ would like it to just look clean and simple. I really hope, that some can help me here, because besides this, everything works just fine on my b (HowTos)