Help - Need utility like Microsoft's Synctoy

Hi - I am a new Mac user (recently switched and hope to never go back...). I currently have a need to sync files across three different OS's (OS X = iMac at home, XP = laptop at home, XP Pro = workstation at work). I have been using Microsoft's Synctoy to keep files in sync between my work PC and my laptop at home. I must admit, it is a convenient utility. However, I recently purchased a .Mac subscription and have been using that environment for my critical backups (among other things). Now, I would like to sync the files on my laptop at home (XP) with my iMac. Is there an Apple utility like Microsoft's Syncytoy? I considered creating something using Apple Script or Automator, but I (frankly) don't have time (I am in the middle of a graduate thesis). Any help would be greatly appreciated.