Hi, I know very little about computers and I really need some help. I bought a g3 ibook off ebay a little while ago. It's running Mac OS 10.2.8, 640MB ram, 900mhz with a combo drive. I wanted to install Tiger on it so I can use my iPod and some other things. I put the disk in, it was recognised and everything. I clicked 'install' and it restarted...but when it went to start installing it said 'This cannot be installed on this computer.' Is that true? Or is there someway I can do it?