Hello =) I'm not devoloper but i can help
1-) You must get wmware workstation 10 software
2-) Install it and create virtual machine with OS.iso (Google it : VMware how to create virtual machine)
3-) You must install or copy league of legends in your virtual machine (Google it: Using Shared Folders - VMware)
4-) i prefer lolbandit bot
when you get virtual machines + lolbandit bot you can take help from this topic about how to install bot
and can you tell your computer hardwares ?