os9- do i really need it?

hi guys...i have never used os9 since making the switch 3 years ago. Do i really need this on my powerbook G4? How much memory is it using, and if we all agree i can uninstall it, how do i go about doing so? I don't want to mess up my machine, but if it is a good amount of memory, i could really use the space. Can you all advise?

thanks
ps- hope this i was a good place to ask this question.

It's around 250-300mb of HD space.

Delete "Applications (Mac OS 9)" (not Applications!) and "System Folder" (not System!)

You will no longer have access to classic mode or boot to OS 9.

If you don't use any OS 9 applications. Then you can delete the folder as MacWork suggested.