Posted 10/26/2009 at 01:18:25am

 Just use the upgrade like you would to install right over the old system, you can boot from the disk and select custom and copy right over the old system and have a fresh clean install which is the best, or you can insert the disk after the system is running and do an upgrade.

 Now if you want to do the upgrade on a new or clean HD the best way is to install W7 skip the product key you have 30 days for that. After you get to the windows screen just reboot leaving the disk in and do a custom install again this time it will recognize that an operating system is on the drive, let it continue up to the product key enter product key this time put the key in and continue and every thing will be like a new system.

 The reason you don't enter the product key on the first install is it doesn't recognise a prevous system and when you enter the product key it gives you a faild warning. you can try entering the key on the first try you might get lucky, if not you can clear the key and continue the first istall to the windows screen then restart with the disk in the drive,the second time it will take the key. good luck. it worked for me.

 JuliusKY