I can answer this one, and it's a good thing that you mentioned your actual mac system. First, we need to check your current Mac OS X version, open your Apple Menu and select "About this Mac".
If your Mac OS X version number is 10.4.10, no update is necessary.
If your Mac OS X version number is
between 10.4.0 and 10.4.9, use the link provided to download and install the free update to Mac OS X 10.4.10 for PowerPC Mac's...
http://www.apple.com/support/downloa...updateppc.html (Be sure to run software update afterwards to get further updates)
If your version number is
before 10.4.0 (Example: 10.3.9), you will need to purchase a upgrade to Mac OS X 10.4 Tiger using this link...
http://store.apple.com/1-800-MY-APPL...&nplm=MA453Z/A ...then after installing the upgrade, use software update to install current updates.
After updating your system, go to toontown.com in Safari, and follow the instructions to install Toontown to your mac, making sure to close and reopen safari after installing the Toontown Plugin.