PureBasic Forums - English

The PureBasic Form Designer is built into the IDE
You have downloaded PB? http://www.purebasic.com/download.php

The form menu is 4th option from the left, click 'new form' and a re-sizeable window is displayed for you to work on, along with a toolbox of gadgets that can be applied.

He mean the PureForm of gnozal, not the integrated form designer

Gnozal's website is down, but in the famous Backup Archive from RSBasic is a zip packed file.

Oops
Is that IDE still good to go with the latest PB Releases? If the Built-in PB Designer isn't enough, search the forum, I think there is at least one more recently created. There is also the top-notch PureVision:
http://purevision.reelmedia.org