hello guys, i nedd some advice on how to configure my PC to flash and upgrade nokia versions.....im using nokia flash tool by cyberdog it wont work on my pc ,i checked my cables but it was fine coz it worked with my fellow technician,s PC...need help on this guys im new with this business..

what program is best to use?
how to install it?
how to make my new PC work with the flashing programs?

my operating system is Win98 and AMD Duron 1.2ghz, 256 Sdram