I did the same, Scott and I saw the google ads in a gray box that took up about the right 2/3 of the horizontal space. However, the text split so it was above and below it on my browser (IE 8.0)
If the OPs browser isn't properly handling flow around the text box, he would be seeing this problem. We would need to see browser and version to know.
At any rate, I think it is a browser problem and not actually a site one. Does VB4.0 have particular browser requirements?