As long as you don't mind it being awfully slow, you could go as far as to use an old, cheap, refurbished netbook or something. Just make sure you plan ahead and have a USB DVD reader or something (since netbooks don't come with optical drives). Yeah, 1gb of RAM should be enough. I'd recommend 2gb, but frankly 1gb will get the job done without much issue.Easy rule of thumb -- if it runs any version of Windows (maybe not Windows 8, I don't know anything about that one yet) or Linux/Linspire or something, it's a PC and you can use Liberte or TAILS with it.