Just a question---why do you want to get Xebra running? I spent a ton of time trying to figure out how to get Xebra working and I just couldn't figure it out. It's not worth it when there are tons of other competent emulators out there like ePSXe, PSXeven, SSSPSX, PCSX, pSX...until Xebra becomes more user friendly or you're trying to play a game that just doesn't work on anything else, I can't see why you'd want to use it.
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Dedicated to mediocrity and repetition since 1994.