Uninstall help

Hi, I'm trying to acheive the following using old hard/software





Mbox1.

Garageband v3

Tiger 10.4.11



I understand that i need to uninstall the version of Pro tools LE 6.1.2 that is outdated to the OS Tiger in order to install CoreAudio Driver 7.4 (which i understand will work with Garageband v3)



....but i have lost the original PT LE 6.1.2 install disk



Is there a download I can use to unistall PT that clears the decks?



Thanks for anyhelp.

Paul