I am testing SetupBuilder 5.2 right now (and I am very impressed). I have never heard of SetupBuilder - but this product is cool!

We would like to create a single file executable, that contains no files and performs some specific tasks on our customers machines.

The single file exe compiled with InstallShield 11 is 2.82MB (no way to send it to our customers via email). The same functionality compiled with SetupBuilder 5.2 is 128KB!!!!!! Amazing...