Deploying a VB.NET application with Inno Setup

Hi,

My application is very complicated and I wish to deploy it with Inno Setup as it will make things easier. Originally I planned a SFX and then run a install.vbs script to do it but I'd like to compile it to one file, possible with Inno.

I am wondering how I will approach these two things:

1. Detect .NET 3.5 and if not available make them download it (I searched on Google but can only find info for this pre-requisite on .NET 2.0)
2. Run a script after install, my vbscript basically configures the firewall, I may even put it into the application as originally I was using the vbscript to create an objExplorer instance to show a dialogue to prompt for .NET 3.5.

Maybe this is not the best way to do it.

Thanks for your time.