Nonmodal Dialog

Hello,
in my application there are some operations which take a lot of time, e.g. collecting data in a large network. While my app does this work, I would like to make it show a dialogbox with the text: "Please wait until data is collected...". I made dialog class, and at the beginning of of the long-time operation I displayed it using CreateDialog(...). But: Only the background of the dialog appeared, not the text, which I placed in a Static Control.
Sorry about my bad english, but I hope, anybody can understand and help me.



Thank you,
Thomas