we are looking for used computer systems , must be cleaned and tested , and in good condition and comes with keyboard, mouse, CD or CDrw or DVD, all other configurations such as USB ports, ethernet/LAN, floppy, wifi card, (OPTIONAL) 512~1G RAM, 40~80G hard drive, P4 processor, monitor CRT or LCD 15~17 inch (optional , plz quote this also ) etc.... ( more features is better ) desktop or tower style .... kindly email me your spec sheets with price for evaluation  our order will be 100 units ~ 120 units per 2 weeks Thank You