Buy Windows 7 Enterprise {title|jhgjhg|}

[proxy545]

We have an eMachines netbook (eM350) with Windows XP + Slax dualboot, issue is,Genuine Microsoft Office 2007 jhgjhg,Buy Windows 7 Enterprise, I had somesort of virus pretending to get an anti-malware factor,Microsoft Office Enterprise 2007, I've scanned it everyday using Malwarebytes for a week or so now,Office Enterprise Key, but even though it's removing some of them others go undetected so I thought I might aswell reinstall windows,Windows Seven, however,Office Standard 2010 Key, the built in factory reset fails to work it just restarts the computer.
My internet access is funny just now (low limit mobile internet) so I can't download big Windows isos all We have is a Win7 32bit iso (which worked fine on my friends laptop) since it's a netbook there's no DVD drive (I don't have any blank discs anyway) so I would need to either get discs and connect a DVD drive to it or install it somehow though a USB.
I've tried a number of guides to install it through a USB with both my 4GB and 16GB USB sticks which didn't work (I have booted linux off both these drives in the past) I also have a 320GB portable HDD though I've backed up all my files from the netbook on it so I'd rather not use that.
So I ask, is there a way to install it through a USB? Or will I need to just have it as just a linux box for just now?
Thank you.