Guy Worthington said:
I'll try that cross-posting again
To answer your subject line, you can't. Formatting means that you erase
everything on the computer, including all of your programs, files, settings,
mail, etc. So by definition, you can't format and still keep an application
on the drive (not to mention that Windows would also be gone, so there would
be nowhere for office to be running.) But if you have Office, you installed
it from somewhere, so you should be able to install it again after the
format.
After formatting, you would have to reinstall Windows, all the drivers for
your hardware, all of your programs, and then you could restore any data
you'd backed up. Somewhere before restoring data and connecting to the
Internet, you should be installing your antivirus software and updating it,
so that you don't re-acquire whatever virus it is you have now.
Are you prepared to reinstall everything on your computer? Do you have all
the CDs, license keys, drivers, etc., and do you know computers well enough
to attempt this?
And are you sure that formatting is the answer? It will get rid of a virus,
but it's probably overkill. It may be wiser to just get rid of the virus, if
you're sure that's the problem.