I assume your MacBook is a PowerPC model (G5, G4, etc). If it is Intel based, you CANNOT run the Classic evironment on it as it will simply not be recognised. If it IS PowerPC based, then you can install Classic within OS X 10.4.x (and also 10.3, 10.2 & 10.1) but there are issues to consider: see
http://docs.info.apple.com/article.html?artnum=106434 and
http://docs.info.apple.com/article.html?artnum=75288
Don't bother with versions earlier than OS 9.2.2
Also, as you don't already have the Classic environment, I'm not sure if merely downloading OS 9.2.2 will do the trick as this is not in itself the Classic emulation environment you need. I've searched Apple's website including the Downloads section but can't find a specific Classic download. When I bought my G5 PowerMac, it was supplied with OS X 10.2 (Jaguar) and Classic was included on the Intallation CD. I've since upgraded to 10.3 and then 10.4, and Classic is not included on 10.4's Installation DVD although 10.4 supports Classic if you already have it installed as I have. If you can't find a Classic download on the Apple website, all I can suggest is that you find someone with an installation CD/DVD for 10.2 and borrow it to install Classic. I'm not certain if Classic is included on the 10.3 Installation disk so you'd have to check if you can't find a 10.2 disk. Reading the pages I've supplied links to above, I suspect you may need to re-install 10.4.10 after installing Classic, but the info ion this isn't clear. After installing Classic, set it's Prefs so that a Classic icon appears in the right-hand portion of your extreme upper menu bar. This enables you to turn Classic on and off as required. Only turn it on when you need to use it as it slows the Mac noticeably (even with dual G5 CPUs!!). Hope this helps.
Ian Mathieson.
U.K.