Holy, that's a lot of stuff for one person to appraise for you!!

Instead of asking us to give you all the answers, have you tried going to ebay? (
http://www.ebay.com ) A lot of the things you mentioned are for auction there, and you can get an idea of how much they're worth, or at least how much people are willing to pay for them, by doing a search for each individual item. For example, there are commodore 64 computers for auction that currently range from $10 - $99, depending on condition.
You could try selling everything together as a package for a set price, to a vintage computer dealer, but you might make more money on everything if you auctioned each item individually on ebay. If you wish to sell, that is... personally I would want to hang on to a lot of that stuff!
