The only kill.exe i'm familiar with is the one from the NT4 resource pack for terminating processes.
However i'm wondering what you want this app to do exactly? If its a complete security wipe you're loking for then that is going to take a significant amount of time to execute as it will need to write to every bit on your Hdd multiple times.
If all you want is a wiped HDD as quick as, then just do a quick format.
Intel core I7 920
6GB OCZ platinum 1600
Samsung 1TB F1 Spinpoint
Samsung SM2443BW 24"