I've been a big lego fan since my dad started buying my first sets for me. I'm 27 now, and can't wait to play lego with my kids when the time come. I'm also looking for missing parts from sets that I would like to bring back to original state... you know when you have the younger sister and brother.. the sets are doomed...
If you have some good info on how, and where is the best way to look for them, send me a pm.
Btw.. search for Lego Digital Designer lxf files brought me here :)