I'd like to have Windows XP on this Dell Dimension E520 but I don't know how to do a Dual Boot Setup.  Can someone please tell me how to do this step by step?  Is it very hard?  Do you need the Windows XP CD from Microsoft?  Just wondering.  I wish this computer would have had Windows XP installed on it but it didn't offer that option, just stupid Windows Vista which I'm not too happy with.  Its too bloated for me, slow and sluggish and I have 2 GB of SDRAM too.