1. Even though a lot of these older games will not require you to restart your Mac after installation, it is always a good idea to do so anyway. This is so that if a game, like The 7th Guest for example, re-writes over current extensions with older versions you will be notified(as something is bound not to work, and the Finder will let you know immediately). Also, it's always a good thing, if the CD/disks have it, to look at the data that is installed(they usually hide this at the VERY bottom of a long scrolling folder). This will let you know of extensions and such that you need to keep an eye on after the install, to be sure it didn't install over your newer extensions. IE: Most games come with the Sound Manager extension, which is up to 3.6.7(if you are running under OS 9.2.2). Now, the game's SM extension won't even be close to that, so take note, and be sure and check your SM ext. after the install(just in case).

2. Check your extensions after restarting. If you don't have it, I highly recommend Extensions Overload for making this as painless as possible. Do this so you can see what some of these older games install in your extensions folder. If they come with InputSprocket, you most likely do not need all 10 or 12 of the extensions and turning them off will free up the system a bit.

3. Make a backup of your system folder and burn it to CD. This has saved me many times as some older games will re-write extensions. If/When they do, you can simply just drop the new extension back in and everything will be back to normal after restart.

4. If the game's installer has a "custom" option, TAKE IT! This will allow you to only install the game's files and not the older extensions and such, therefore avoiding alot of the aforementioned nastiness above.

5. Get used to hard freezes...this will happen every now and then when trying to get some of these games to work. KNOW where your "reset" button is...

6. Since a lot of these games will switch the res, or make you switch it, it messes with your desktop icons, putting them in all sorts of wild places when you return to your desktop and normal resolution. Now, you can manually put them back...but if that gets to be too tedious try Desktop Icon Manager. It's free, and is only a script so you don't have to worry about any lengthy installations or more extensions.

7. Upon running some installers, you will immediately receive a message from the Finder telling you the installer program crashed. The way to get around this: Just ignore the Finder! Run the installer, when it's done, it will crash...but the install will be fine. It's just another one of those wonderful things that happen with older software running on a modern OS...