Donna,
I have good news : you can install a retail version of Windows Home Premium x86 and simply activate it with your legitimate OEM key

I had this confirmed by some associates over at SevenForums and am confident its a go.
Steps:
1. Backup any data required off the laptop.
2. Make a note of the OEM key.
3. On a clean computer, download the following (all legitimate):
- Windows Home Premium x86 SP1
You want the English x86:X17-58996.ISO
http://www.mydigitallife.info/official-windows-7-sp1-iso-from-digital-river/- Microsoft USB Installer
http://www.microsoftstore.com/store/msstore/html/pbPage.Help_Win7_usbdvd_dwnTool4. You will need a 4GB USB thumb/flash drive. Install and run the USB installer, and when prompted point it to the .ISO file you downloaded. This will format the USB drive and then write the .ISO to this USB and make it bootable. You will install Windows from this USB drive.
5. Boot the laptop, and enter the BIOS by repeatedly hitting the DEL key. Once in the BIOS, find the setting that lets the laptop boot from a USB flash drive before any HDD. Save the BIOS settings and then exit the BIOS.
6. Plug in the USB drive and then reboot the PC.
7. Windows installation will start.
To ensure all traces of the malware are removed, I recommend doing the following:
a. At the first screen that prompts for language preferences, hold
SHIFT and then press
F10.
b. You will now see a CMD window with the prompt X:\Sources.
c. Type
DISKPART and hit enter.
d. Type
list disk and hit enter. It looks like you only have 1 physical disk which should be numbered Disk 0
e. Type
select disk 0 and hit enter.
f. Type
clean all and hit enter - this will completely wipe every sector of the disk and is more thorough than a format. It may take a few hoyrs.
g. When finished, type
exit and hit enter.
h. Type
exit and hit enter once more.
8. You will now be back at the first screen, the language preferences screen. Now proceed with installation as normal.
- Do NOT choose online activation - you have 30 days to do that - and you may need to do that via phone. We will cover that later.
- Choose the CUSTOM install option when prompted.
Let us know how you get on.
Regards,
Golden