In case anyone cares, I posted a nice Boca memory card for PC/XT/AT machines on ebay at http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=51888990 and an XT replacement motherboard running a V20 processor at 8 mhz at http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=51893411 These seem like nice upgrades for the working XT class machines out there, or the classics that you want to bring up from the stock 256 or 512k RAM. If you don't care, sorry. If you do, glad to help.