It all went well apart from one dead DIMM - a bit of a PITA to fix since it was the one inside rather than the user-replaceable one, but nowhere near as bad as swapping out the drives.
One annoyance - I was going to include a copy of office 2004, largely because it can be used as the "key" for Office 2008 Upgrade version, but it turned out that the box actually contained a copy of Office X, which is even earlier, and didn't have a valid install key. I'd complain, but since I think I paid 50p for it in a charity shop it's hardly worth the effort! Fortunately I've also got a copy of iWork 08 spare, I'll include that instead.
Tomorrow I'll clear up enough to take some photos without my back room looking like a tip and list it on ebay, at say a tenner off what I would normally charge because of the screen problem. Once that's done I just need to wait for the ram to do the 700mhz machine, and get that listed. And after that I really think I'm going to stop messing around with these machines, as I've said once or twice before...
Also posted at http://ffutures.dreamwidth.org/2050426.html, where there are comments. Please comment here or there using OpenID.