Hmm, i wouldn't use programs to get multiclient working.
U could only get keyloggers and everything.
If u really have to use it, then just copy and rename Nksp.exe to another name, i.e Multi.exe
Then just make a shortcut to it and change it like this :
"path\to\LCGenericName01\Bin\Multi.exe -Engine.dll"
and click ok or save or whatever button.
And done already, without any evil programs