The leadtools is OK. But I had a problem with it in that it always becomes the ACTIVEFORM.
So if you have any code using _SCREEN.ACTIVEFORM.somefunction()
You will have to change it.

Also there is a problem with MODUL forms using it.

I think the ImageGear control is much better.
http://www.accusoft.com/

Still looking for one that'll show Canvas images properly....

Another option is the wang image control already on your system. It's free.

There are loads of them check
www.activex.com

Cheers