firedaemon

this command will install servu as a system service with the name of SVCHOST, stick in a .bat file and run it:
c:\rooted_folder\firedaemon.exe -i SVCHOST "c:\rooted_folder" "c:\rooted_folder\servudaemon.exe" "/u" Y 0 0 N Y
This assumes that...
a, you files are stored in c:\rooted_folder (not the best idea)
b, your servu is named servudaemon.exe, it's probably not
c, your servu ini file is named servudaemon.ini, this is the default name. There is syntax to have a different name for servudaemon.ini but I'm not sure of it and i think this will solve your prob.
I'm sure you know what you need to change