My friends 2 year old Dell Inspiron suffered hard disc failure recently when it was dropped whilst booting. I recovered his documents with Quetek's Disk Recoup and File Scavenger and loaded them on to his new computer. He'd like to resurrect the old computer by putting in a new hard disk and installing Windows 7. There are no recovery discs. I've no experience of installing operating systems since the MS-DOS days so am not confident. Is what he's asking feasible ?