Will this powersupply work for the geforce gtx 285 card?

Yes, but get something better, cheap powersupplies can kill a system if they fail and often struggle to reach their declared output, leading to an unstable system.
If you do not want to use the unit linked by IH8U look for 550-650W with twin 6+2
pin PCI-E cables from: Corsair, Pc Power and Cooling, Ocz, Antec or Seasonic.