[ubuntu] Motherboard died can I plug Ubuntu HD into another model?

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http://ubuntuforums.org – My motherboard died, it was an EMachine and this seams to be a typical problem with them. I'm not sure if I should replace the motherboard or just by something better. My question is, if I plug my HD into a different motherboard will it recognize and adjust to the new motherboard(I know Windows will throw up, if you do this), or do I have to reinstall Ubuntu and if so can I install over the old installation, what is involved? Thanks, Dave (Hardware)