WebTrends Enterprise
http://product.webtrends.com/ptw.aspx?action=1&prodtype=rcent&resellerid=i25 

WebTrends Professional
http://product.webtrends.com/ptw.aspx?action=1&prodtype=rcprof&resellerid=i25 

WebTrends Small Business
http://product.webtrends.com/ptw.aspx?action=1&prodtype=rcsbus&resellerid=i25 

General Product Selection Page
For a link that includes access to all three products, use this link: 
http://product.webtrends.com/ptw.aspx?action=1&prodtype=wrc&resellerid=i25

Product Upgrade link:

Customers with a current support plan can upgrade to WebTrends 7 for free, and can visit the product upgrade page for instructions on how to upgrade. In order to make it easier for customers to upgrade, partners are encouraged to post this link as well. No Autoroute code is necessary because there is no form for the customer to fill out, thus no contact information is collected.
http://www.netiq.com/support/wt/upgrade.asp