help with self extracting to temp file

Could anyone guide me on how to create a self extracting EXE from a folder, that will extract and run the exe/files from a windows temp folder?

I'm aware of how to do it in winrar, but not sure of the specific directory that should be used for temp storage (for use on PC's without admin privileges)

So basically i want one big compressed self extracting exe that extracts its contents to a temp folder, and autoruns a specified file.