Some problem with my DirectX page and my Installing Page

[RedDesign]

Hello everyone,
I tried to make my own setup but some features are strange, I have seen that lot of people used ISDONE but with this addon I can't install one program "Izarc Extract Error...." So I want to know how can I put a progress bar with percent if I don't want to use this script/DLL.

My second problem is my DirectX page, I want to create a page for DirectX and launch DXSETUP.EXE in a new window if you agree.

Preview:

I have put my .iss file in attachement but you will see that there is nothing if you click on the Yes button. LoL
Can you help me please ?