Yes, you could have the hard drive changed to bigger. And the cd/dvd drive changed... changing one or two things may make sense, depending on your needs. If you want to use the iBook as your main machine, maybe selling it and getting a newer version (e.g. 800 mhz, 4 gb) may cost less (and give a faster machine) than changing first the hard drive, then cd drive etc. If you need jsut more storage space. a 60 GB external firewire hard drive (e.g. maxtor) can be bought on offer for about 100 $; if your need for storage isn't for space to be used 100 % of the time, that can be one solution.