Hi again Alex,
I just remembered. For each of your laptops, go to this site and run the scanner.
http://www.crucial.com/usa/en/systemscanner
It tells you how much RAM you have, how many slots you have for RAM, and how much more RAM you can put it. Then write down the RAM details, and try find them cheap on Ebay. Changing RAM in a computer is pretty simple, just make sure you do it by the sink, and keep grounding yourself by touching the tap.
My old Toshiba had its screen die after 13 or 14 years. My old Acer had it's screen die just after the warranty period expired. My Acer netbook died from a known motherboard issue, nearly three years after I bought it, and I had only used it infrequently - mainly when overseas. I'm wary of newer laptops.
If you need grunt in a computer for playing big action games or for processing video, your old laptops aren't much good. But if all you do is play something like Hoyles Card games, and process photos - then they are fine if they have sufficient RAM.
Regards,
Renato