You can just download the iso completely and then find where it is, in Documents or Downloads, and just click on it. You will be able to burn it to disk straight with Windows 7. No need for a third party app to burn it. That is, if you have an earlier Windows 7 build already installed, if not, you'll have to use a third party app like Mr Grim says to burn it.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Airbot 2.0
OS
Windows 7 Ultimate x64 SP1
CPU
Core i7 920 (D0) @ 4Ghz, *26c idle *65c full load on air
Motherboard
Asus P6X58D Premium - Sata 6Gb/s - USB 3.0
Memory
12GB DDR3 Corsair Dominator -CMD12GX3M6A1600C8 at 1600MHz
Graphics Card(s)
Zotac Geforce GTX 770
Sound Card
ASUS Xonar D2X
Monitor(s) Displays
1 LG 24" Flatron W2453V-PF 1 Samsung 24" P2450H both 2ms RT