(Noob) Refurbished System & Windows 7

TarantulaDude

Honorable
Jul 12, 2013
38
0
10,530
I'm planning on buying this desktop. I'm fairly certain that I install the new copy of Windows 7 myself and it is not pre-installed. If that is the case could I replace the 80GB hard drive with a 160GB then install Windows 7 with no problems?

Any replies are greatly appreciated!