Win 8 upgrade or fresh install

[mike13]

I was talking to a women at Microsft last evening. I explained that I had taken advantage of that upgrade to windows 8 for $20 last fall, and that everying went well.

My question was, if I removed Win 8 from that computer, and reinstalled Windows 7, could I install Win 8 from the DVD I made, on another new computer that has Win. 7

Her answer was yes. She told me to start installing Win 8 on the new computer, and when I came to the part where I had to enter the 25 digit code, to call Microsoft again,

and they would give me a new code. So that was good info. After I hung up, I wish I had asked her if I could wipe the hard drive on the new computer before I started installing Win 8, because I believe a fresh install is always better. But I did not know if that "UPGRADE" was going to look for Win 7 first, before it installed. I could call Microsoft back, but I was just wondering if anyone here would know the answer. Many thanks, Mike