You can't, the shell predefined the UI settings to a point that most can't be change, for me its not so much of nostalgia, more like I just love the simplicity of my XP 64bit. The only way to do what you want is to use something like Stardock but even then, theres a limit to how far you can change them to.
dimsums
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Or you can download VirtualPC from Microsoft and create a Windows 98 virtual machine inside then for when you want to wax nostalgic.
Reverend Jim
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