First of all please uninstall AVG from your old computer/location on hard disk: Start - Programs - AVG 7.5 - Uninstall AVG - follow the uninstallation wizard and restart pc. Then please download the latest version of AVG from:

http://www.avg-antivirus.com.au/avg_download1.htm

- choose product according to your purchased licence

Select Save, not Run and specify the folder on your disk where to save this installation package.  Use this downloaded file for installation – double click will run new installation.  Use also your valid (and whole) licence number.  This licence number was sent to you in e-mail from us, please use 'copy & paste' method.