Easiest way to synchronise files with laptop

[always24-7.co.uk]

Hi All,

As some may remember I purchased a laptop recently so that I can continue to work while i'm at work!?!? As I work on the desktop at home, I need to keep the files synchronised between but whats the easiest way? Currently i'm just making a mental note of what I have changed and copying them over. There must be an easier way? Something like my PDA would be nice, plug it in. PC recognises it and synchonises the files .