Went into local businesses
Explained to them that I was offering Windows 7 Upgrades (Ofcourse many were not interested - Many had windows 7 already.)
You would be amazed at the amount of people still running older PC's and have no idea of how to upgrade or why they should do so.. I explained to them that windows 7 would be quicker, They also liked the sound of there computers being up to date!
I went to about 60-70 stores (I did not count), 6 agreed to the upgrade.
$100 each. Easy!
I took the money there and then and upgraded - Some want me to go back tommorow morning due to the store being to busy at the time.
However the $600 was not all profit - I spent $300 on legitimate windows 7 discs.
$300 Profit - Same again tommorow!
Edit - PS, Im in the UK.. I do not know if this would be as successful in the USA - You guys are probably more up to date with windows 7!