Need help making an .iso

I downloaded an upgrade for windows vista ultimate 32bit through a deal at my school. I though I would just end up with an .iso that I had to burn but what i got were three files. I would like to make an iso disk so I can do a fresh install with the upgrade disks. So how to a make a normal install disk with a .exe and 2 .wim files. I was trying to save money buy just downloading the files instead of ordering a disk. If someone can let me know the prog to use or how to make this happen I would be very appriciative!!! Thanks for any help. Feel free to ask anything else if you need to know more info.

Nevermind found this after posting it worked perfect hope this helps someone else.