First you need to download it from the Swipe for Symbian Beta labs website.
Then all you need to do to configure as in the following screenshots. First in the Swipe settings panel, the open the Advanced panel (see screens):
If you don't get the mini QWERTY keyboard after this configuration you need to select it from the input selection when the ABC input type appears.
The best part of it is that you can use it for Swype as well as mini QWERTY at the same time. I discovered this app a while ago, but it had some major bugs that caused crashes, but now it seems stable enough for day to day use.