Do not click on "Download Now" pop-up ads. Here are the three safest methods to get KPT filters today:
The Internet Archive (archive.org) hosts several ISO images of old "KPT Power Suite" CDs. kpt filters for photoshop 7.0 free download
Specifically for KPT filters:
Once installed, using KPT is different from native filters. Most KPT filters open a massive, full-screen GUI (unique for the era). Do not click on "Download Now" pop-up ads