Need help with bootcamp

So i've got my windows 7 file on my usb by following this video's steps Installing Win7 using a USB Stick | TechNet Edge & when i started bootcamp assistant, they asked me for an ISO file, what is an iso file and where do i find it? (I've got Windows 7 Home Premium 64bit)

It would be really appreciated if someone could reply me asap!

The video you watched was for installing Windows 7 on a PC via a USB flash drive, not on a Mac using Boot Camp.

See this: What is an iso file?

Since your MacBook Pro does not have an optical drive, Boot Camp will allow you to install Windows 7 using an iso file. Also, do not forget to download Windows 7 drivers from Apple that Boot Camp is telling you.

So i must create my iso file & put it on my usb before i can continue?

Spox said:

So i must create my iso file & put it on my usb before i can continue?

Click to expand...

That's correct. You can use any machine that has an optical drive, even a Windows PC to burn the iso.

Ok, so now i got my iso on my usb. When i partitioned my mac & it restarted, i'm stuck at this "Non-system disk, press any key to reboot" screen? What am i suppose to do now? Help please ;(

When you restarted, did you hold down the option key and point to the iso?

Note: If that doesn't work, try the install instructions from here. I know these instructions work although it involves using rEFIt.