oh thank you analogman, and I think you can do that : Rename ds2key.exe to something like ds2key2.exe then change something like : ds2key.exe 192.168.1.101 9501 30 46 45 21 38 19 28 42 200 208 203 205 to ds2key2.exe 192.168.1.101 9501 30 46 45 21 38 19 28 42 200 208 203 205 So you'll be able to run 2 times the program at the same time.. and I think you know the rest.. I did not test it but it should work.