Brother if u want to create MultiBoot USB drive then you need to install from the same USB two or more OSes like Windows 7, Windows Server 2008, Linux ...etc

1. First download the attachment file and install Install_RMPrepUSB_Full.exe
then place the Multiboot folder in C:\ drive

http://www.mediafire.com/?kqy5jz5knni...

So let's get started

First download an ISO file for your Operating System (Windows, Linux ...etc) then place them in C:\Multiboot\ISO\
make sure their names do not have Space eg. [ ] in it you can fill it with underscore [_]

then Connect your 8GB or more USB flash drive to your computer

Now open RMPrepUSB.exe from your Desktop then select option as it appears on the video

when you sure that your setting like me hit [6 Prepare Drive] when it's done click [Install grub4dos]

in this video i use Windows 7 and Windows Server if you want to add more or change iso you have to go to C:\Multiboot and edit Menu.lst

so if you want Linux just change ISO file name and change title name and order

that's it now you have a fully working Multiboot
usb drive