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How do you want the UI to behave differently? You said NOT like MS office 2007?
Like for example to add new colors or gradients to the available selections, you have to close the selection dialog and goto Format->Area...Colors, Add. Sure, it's easy enough to do, but for the first several weeks I thought that OpenOffice didn't allow custom colors or gradients.
And I remember my boss had a weird habit of starting formulas on spreadsheets with the + sign instead of the = sign. It worked in MS Office, but not in OOo, and he would put his fist through the screen when it didn't work.
Oh well, live and learn.