I have an iMac 400DVse. I have added an external cd-rw, zip disk, 128 megs of ram, and several system upgrades. I love my iMac, but I am at the point of having a crowded HD. 13 gb's and needing more. I am thinking of getting a nice external hd. But.....should I just stop with the upgrades and get a new mac? My desk is getting crowded here. What should I do with the old iMac? How do you move expensive applications to the new mac? Which Mac?