we went down 2 seperate roads with our puter...
the old one was stuffing up and was generally slow any how. on ebay (gotta love ebay sometimes) we got a tower with motherboard, chip (2.4 ghz), and ram for about $300 then just added our old harware to it (eg: more ram, floppy drive, dvd burner, etc).
we also bought a lap top on ebay recently. its not super fast or anything but it;ll do. its a IBM thinkpad with 1 ghz chip, dvd rom, video card, floppy, etc... I had to go to the ibm site and download a few drivers and install my own OS but it was cheaper than getting them to install it. all up it cost just over $600. works fine.
the problem with getting a secondhand laptop is there is no guarentee the battery is any good, but we got a good one.
btw welcome back ken

kept your seat warm!