Server tool or server exe?
I have a modified version of the DSTool, which i was allowed to modify for resistance, with the permission of the author. But you can just rename the 1.75 server exe to the name of the 1.46 and DSTOOL will use it no probs. But you will have to change the port to the default Res port, or just alter you prot in game to find it.
If your simply afetr the exe for the server, then ignore this message as you Q was answered above.
Cheers
GC