SilkTest does not handle custom grid controls out of the box. You will have to collaborate with development to send messages about each row and column, and then capture each of these with SilkTest and write some code to handle them. It is not trivial, is a lot of work and requires collaboration. I've been involved with a project to handle custom grid controls written in VC++ and it was not easy to do. The hardest thing was figuring out how to capture the messages with something other than pointers. It was easy for developers to pass row/column info as pointers, but Silk doesn't use pointers.