Hello,
You can set up a VI to be displayed as "dialog", which will remove all toolbars and scroll bars when it runs. This is done by going to the "VI Properties", selecting "Window Appearance", then choosing "Dialog". I have attached a sample VI that demonstrates how I would do this...it simply shows a picture in a picture control, and has a delay to show you the dialog appearance (no toolbars).
I wrote this example in LabVIEW 6.0.2...hopefully this is the version you are using.
Please let me know if you have any other questions, and have a pleasant day.
Sincerely,
Darren N.
NI Applications Engineer