what would cost be for a used windows xp home edition version 2002? may buy it but am told may cost from $170 -$200 ? tower mfg by cyber power inc. has aspire logo on it and is amd athon tm 64 processor 3000+ 1.81-ghz 1.00 GB of ram i am need know cause i am a novice grandma with internet ok ? thankyou so much !! Ms. Pauline G. Hause