you can use
any assembler in
batch mode using WinAsm Studio with FASM Add-In. the main difference is in the project properties: by default (MASM mode) you set only parameters there, in batch mode you must set there full commandlines, including tool.
read how you can do that.
also you may use
fasm - seems it builds 64-bit application, and it is more convenient to use it with FASM Add-In
unfortunately, i do not have nor ml64, neither 64-bit system to try