[willed]

I've found my old copy of PhotoShop and need Classic to run it. My iBook came with 9.2 but when I run that install disk it tells me it can't install over the current startup disk (i.e. 10.4). Could I install it from the 10.1 or Jaguar disks, or even the Tiger DVD?

[Barry]

You need to upgrade your 9.2 to 9.2.2 for Tiger compatibility.
You can download 9.2.1 here, which is required before installing 9.2.2;

http://docs.info.apple.com/article.html?artnum=120030

You can download 9.2.2 here;

http://docs.info.apple.com/article.html?artnum=75186