Carrie-Ann,
Before installing the link below, clear your cache & cookies from your web browser, close out of the web browser and when you reopen, select the link below. This is for the latest version of ActivInspire in UK English.
Your password is: QiakNIth
Name: ActivInspireSuite+v1.7.61884+en_GB+setup.exe
Size: 194.41 MB
Expires: September 10, 2013
Save the download, once saved either to your downloads folder or desktop, double click on the file and select Run. The Install Wizard will appear and just follow the prompts.
Hope this helps!