Nevermind, booting from rom worked, I just wasn't pressing the key combo quick enough. (I couldn't reach all the keys with one hand.)

I don't know how to get After Dark to not launch on startup though, other than deleting it. Any ideas?

I noticed it was set in Special>Set Startup...

So I disabled it, but it doesn't seem to make a difference.

Also, where is the fan header in this machine? I couldn't seem to relocate it after reassembly (it was in pieces in a box for like 3 years)

And how do I get the Control Panel to accept changes made to the background pattern?